diff options
Diffstat (limited to 'ffmpeg/libavcodec/utils.c')
| -rw-r--r-- | ffmpeg/libavcodec/utils.c | 3095 |
1 files changed, 3095 insertions, 0 deletions
diff --git a/ffmpeg/libavcodec/utils.c b/ffmpeg/libavcodec/utils.c new file mode 100644 index 0000000..c15b772 --- /dev/null +++ b/ffmpeg/libavcodec/utils.c @@ -0,0 +1,3095 @@ +/* + * utils for libavcodec + * Copyright (c) 2001 Fabrice Bellard + * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * utils. + */ + +#include "config.h" +#include "libavutil/avassert.h" +#include "libavutil/avstring.h" +#include "libavutil/bprint.h" +#include "libavutil/channel_layout.h" +#include "libavutil/crc.h" +#include "libavutil/frame.h" +#include "libavutil/mathematics.h" +#include "libavutil/pixdesc.h" +#include "libavutil/imgutils.h" +#include "libavutil/samplefmt.h" +#include "libavutil/dict.h" +#include "libavutil/avassert.h" +#include "avcodec.h" +#include "dsputil.h" +#include "libavutil/opt.h" +#include "thread.h" +#include "frame_thread_encoder.h" +#include "internal.h" +#include "bytestream.h" +#include "version.h" +#include <stdlib.h> +#include <stdarg.h> +#include <limits.h> +#include <float.h> +#if CONFIG_ICONV +# include <iconv.h> +#endif + +volatile int ff_avcodec_locked; +static int volatile entangled_thread_counter = 0; +static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op); +static void *codec_mutex; +static void *avformat_mutex; + +void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size) +{ + if (min_size < *size) + return ptr; + + min_size = FFMAX(17 * min_size / 16 + 32, min_size); + + ptr = av_realloc(ptr, min_size); + /* we could set this to the unmodified min_size but this is safer + * if the user lost the ptr and uses NULL now + */ + if (!ptr) + min_size = 0; + + *size = min_size; + + return ptr; +} + +static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc) +{ + void **p = ptr; + if (min_size < *size) + return 0; + min_size = FFMAX(17 * min_size / 16 + 32, min_size); + av_free(*p); + *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size); + if (!*p) + min_size = 0; + *size = min_size; + return 1; +} + +void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size) +{ + ff_fast_malloc(ptr, size, min_size, 0); +} + +void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size) +{ + uint8_t **p = ptr; + if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) { + av_freep(p); + *size = 0; + return; + } + if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1)) + memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE); +} + +void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size) +{ + uint8_t **p = ptr; + if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) { + av_freep(p); + *size = 0; + return; + } + if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1)) + memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE); +} + +/* encoder management */ +static AVCodec *first_avcodec = NULL; + +AVCodec *av_codec_next(const AVCodec *c) +{ + if (c) + return c->next; + else + return first_avcodec; +} + +static void avcodec_init(void) +{ + static int initialized = 0; + + if (initialized != 0) + return; + initialized = 1; + + if (CONFIG_DSPUTIL) + ff_dsputil_static_init(); +} + +int av_codec_is_encoder(const AVCodec *codec) +{ + return codec && (codec->encode_sub || codec->encode2); +} + +int av_codec_is_decoder(const AVCodec *codec) +{ + return codec && codec->decode; +} + +void avcodec_register(AVCodec *codec) +{ + AVCodec **p; + avcodec_init(); + p = &first_avcodec; + while (*p != NULL) + p = &(*p)->next; + *p = codec; + codec->next = NULL; + + if (codec->init_static_data) + codec->init_static_data(codec); +} + +unsigned avcodec_get_edge_width(void) +{ + return EDGE_WIDTH; +} + +void avcodec_set_dimensions(AVCodecContext *s, int width, int height) +{ + s->coded_width = width; + s->coded_height = height; + s->width = -((-width ) >> s->lowres); + s->height = -((-height) >> s->lowres); +} + +#if (ARCH_ARM && HAVE_NEON) || ARCH_PPC || HAVE_MMX +# define STRIDE_ALIGN 16 +#else +# define STRIDE_ALIGN 8 +#endif + +void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, + int linesize_align[AV_NUM_DATA_POINTERS]) +{ + int i; + int w_align = 1; + int h_align = 1; + + switch (s->pix_fmt) { + case AV_PIX_FMT_YUV420P: + case AV_PIX_FMT_YUYV422: + case AV_PIX_FMT_UYVY422: + case AV_PIX_FMT_YUV422P: + case AV_PIX_FMT_YUV440P: + case AV_PIX_FMT_YUV444P: + case AV_PIX_FMT_GBRP: + case AV_PIX_FMT_GRAY8: + case AV_PIX_FMT_GRAY16BE: + case AV_PIX_FMT_GRAY16LE: + case AV_PIX_FMT_YUVJ420P: + case AV_PIX_FMT_YUVJ422P: + case AV_PIX_FMT_YUVJ440P: + case AV_PIX_FMT_YUVJ444P: + case AV_PIX_FMT_YUVA420P: + case AV_PIX_FMT_YUVA422P: + case AV_PIX_FMT_YUVA444P: + case AV_PIX_FMT_YUV420P9LE: + case AV_PIX_FMT_YUV420P9BE: + case AV_PIX_FMT_YUV420P10LE: + case AV_PIX_FMT_YUV420P10BE: + case AV_PIX_FMT_YUV420P12LE: + case AV_PIX_FMT_YUV420P12BE: + case AV_PIX_FMT_YUV420P14LE: + case AV_PIX_FMT_YUV420P14BE: + case AV_PIX_FMT_YUV422P9LE: + case AV_PIX_FMT_YUV422P9BE: + case AV_PIX_FMT_YUV422P10LE: + case AV_PIX_FMT_YUV422P10BE: + case AV_PIX_FMT_YUV422P12LE: + case AV_PIX_FMT_YUV422P12BE: + case AV_PIX_FMT_YUV422P14LE: + case AV_PIX_FMT_YUV422P14BE: + case AV_PIX_FMT_YUV444P9LE: + case AV_PIX_FMT_YUV444P9BE: + case AV_PIX_FMT_YUV444P10LE: + case AV_PIX_FMT_YUV444P10BE: + case AV_PIX_FMT_YUV444P12LE: + case AV_PIX_FMT_YUV444P12BE: + case AV_PIX_FMT_YUV444P14LE: + case AV_PIX_FMT_YUV444P14BE: + case AV_PIX_FMT_GBRP9LE: + case AV_PIX_FMT_GBRP9BE: + case AV_PIX_FMT_GBRP10LE: + case AV_PIX_FMT_GBRP10BE: + case AV_PIX_FMT_GBRP12LE: + case AV_PIX_FMT_GBRP12BE: + case AV_PIX_FMT_GBRP14LE: + case AV_PIX_FMT_GBRP14BE: + w_align = 16; //FIXME assume 16 pixel per macroblock + h_align = 16 * 2; // interlaced needs 2 macroblocks height + break; + case AV_PIX_FMT_YUV411P: + case AV_PIX_FMT_UYYVYY411: + w_align = 32; + h_align = 8; + break; + case AV_PIX_FMT_YUV410P: + if (s->codec_id == AV_CODEC_ID_SVQ1) { + w_align = 64; + h_align = 64; + } + break; + case AV_PIX_FMT_RGB555: + if (s->codec_id == AV_CODEC_ID_RPZA) { + w_align = 4; + h_align = 4; + } + break; + case AV_PIX_FMT_PAL8: + case AV_PIX_FMT_BGR8: + case AV_PIX_FMT_RGB8: + if (s->codec_id == AV_CODEC_ID_SMC || + s->codec_id == AV_CODEC_ID_CINEPAK) { + w_align = 4; + h_align = 4; + } + break; + case AV_PIX_FMT_BGR24: + if ((s->codec_id == AV_CODEC_ID_MSZH) || + (s->codec_id == AV_CODEC_ID_ZLIB)) { + w_align = 4; + h_align = 4; + } + break; + case AV_PIX_FMT_RGB24: + if (s->codec_id == AV_CODEC_ID_CINEPAK) { + w_align = 4; + h_align = 4; + } + break; + default: + w_align = 1; + h_align = 1; + break; + } + + if (s->codec_id == AV_CODEC_ID_IFF_ILBM || s->codec_id == AV_CODEC_ID_IFF_BYTERUN1) { + w_align = FFMAX(w_align, 8); + } + + *width = FFALIGN(*width, w_align); + *height = FFALIGN(*height, h_align); + if (s->codec_id == AV_CODEC_ID_H264 || s->lowres) + // some of the optimized chroma MC reads one line too much + // which is also done in mpeg decoders with lowres > 0 + *height += 2; + + for (i = 0; i < 4; i++) + linesize_align[i] = STRIDE_ALIGN; +} + +void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height) +{ + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt); + int chroma_shift = desc->log2_chroma_w; + int linesize_align[AV_NUM_DATA_POINTERS]; + int align; + + avcodec_align_dimensions2(s, width, height, linesize_align); + align = FFMAX(linesize_align[0], linesize_align[3]); + linesize_align[1] <<= chroma_shift; + linesize_align[2] <<= chroma_shift; + align = FFMAX3(align, linesize_align[1], linesize_align[2]); + *width = FFALIGN(*width, align); +} + +int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, + enum AVSampleFormat sample_fmt, const uint8_t *buf, + int buf_size, int align) +{ + int ch, planar, needed_size, ret = 0; + + needed_size = av_samples_get_buffer_size(NULL, nb_channels, + frame->nb_samples, sample_fmt, + align); + if (buf_size < needed_size) + return AVERROR(EINVAL); + + planar = av_sample_fmt_is_planar(sample_fmt); + if (planar && nb_channels > AV_NUM_DATA_POINTERS) { + if (!(frame->extended_data = av_mallocz(nb_channels * + sizeof(*frame->extended_data)))) + return AVERROR(ENOMEM); + } else { + frame->extended_data = frame->data; + } + + if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0], + (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples, + sample_fmt, align)) < 0) { + if (frame->extended_data != frame->data) + av_freep(&frame->extended_data); + return ret; + } + if (frame->extended_data != frame->data) { + for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++) + frame->data[ch] = frame->extended_data[ch]; + } + + return ret; +} + +static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame) +{ + FramePool *pool = avctx->internal->pool; + int i, ret; + + switch (avctx->codec_type) { + case AVMEDIA_TYPE_VIDEO: { + AVPicture picture; + int size[4] = { 0 }; + int w = frame->width; + int h = frame->height; + int tmpsize, unaligned; + + if (pool->format == frame->format && + pool->width == frame->width && pool->height == frame->height) + return 0; + + avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align); + + if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) { + w += EDGE_WIDTH * 2; + h += EDGE_WIDTH * 2; + } + + do { + // NOTE: do not align linesizes individually, this breaks e.g. assumptions + // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2 + av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w); + // increase alignment of w for next try (rhs gives the lowest bit set in w) + w += w & ~(w - 1); + + unaligned = 0; + for (i = 0; i < 4; i++) + unaligned |= picture.linesize[i] % pool->stride_align[i]; + } while (unaligned); + + tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h, + NULL, picture.linesize); + if (tmpsize < 0) + return -1; + + for (i = 0; i < 3 && picture.data[i + 1]; i++) + size[i] = picture.data[i + 1] - picture.data[i]; + size[i] = tmpsize - (picture.data[i] - picture.data[0]); + + for (i = 0; i < 4; i++) { + av_buffer_pool_uninit(&pool->pools[i]); + pool->linesize[i] = picture.linesize[i]; + if (size[i]) { + pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL); + if (!pool->pools[i]) { + ret = AVERROR(ENOMEM); + goto fail; + } + } + } + pool->format = frame->format; + pool->width = frame->width; + pool->height = frame->height; + + break; + } + case AVMEDIA_TYPE_AUDIO: { + int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout); + int planar = av_sample_fmt_is_planar(frame->format); + int planes = planar ? ch : 1; + + if (pool->format == frame->format && pool->planes == planes && + pool->channels == ch && frame->nb_samples == pool->samples) + return 0; + + av_buffer_pool_uninit(&pool->pools[0]); + ret = av_samples_get_buffer_size(&pool->linesize[0], ch, + frame->nb_samples, frame->format, 0); + if (ret < 0) + goto fail; + + pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL); + if (!pool->pools[0]) { + ret = AVERROR(ENOMEM); + goto fail; + } + + pool->format = frame->format; + pool->planes = planes; + pool->channels = ch; + pool->samples = frame->nb_samples; + break; + } + default: av_assert0(0); + } + return 0; +fail: + for (i = 0; i < 4; i++) + av_buffer_pool_uninit(&pool->pools[i]); + pool->format = -1; + pool->planes = pool->channels = pool->samples = 0; + pool->width = pool->height = 0; + return ret; +} + +static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame) +{ + FramePool *pool = avctx->internal->pool; + int planes = pool->planes; + int i; + + frame->linesize[0] = pool->linesize[0]; + + if (planes > AV_NUM_DATA_POINTERS) { + frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data)); + frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS; + frame->extended_buf = av_mallocz(frame->nb_extended_buf * + sizeof(*frame->extended_buf)); + if (!frame->extended_data || !frame->extended_buf) { + av_freep(&frame->extended_data); + av_freep(&frame->extended_buf); + return AVERROR(ENOMEM); + } + } else { + frame->extended_data = frame->data; + av_assert0(frame->nb_extended_buf == 0); + } + + for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) { + frame->buf[i] = av_buffer_pool_get(pool->pools[0]); + if (!frame->buf[i]) + goto fail; + frame->extended_data[i] = frame->data[i] = frame->buf[i]->data; + } + for (i = 0; i < frame->nb_extended_buf; i++) { + frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]); + if (!frame->extended_buf[i]) + goto fail; + frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data; + } + + if (avctx->debug & FF_DEBUG_BUFFERS) + av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame); + + return 0; +fail: + av_frame_unref(frame); + return AVERROR(ENOMEM); +} + +static int video_get_buffer(AVCodecContext *s, AVFrame *pic) +{ + FramePool *pool = s->internal->pool; + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format); + int pixel_size = desc->comp[0].step_minus1 + 1; + int h_chroma_shift, v_chroma_shift; + int i; + + if (pic->data[0] != NULL) { + av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n"); + return -1; + } + + memset(pic->data, 0, sizeof(pic->data)); + pic->extended_data = pic->data; + + av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift); + + for (i = 0; i < 4 && pool->pools[i]; i++) { + const int h_shift = i == 0 ? 0 : h_chroma_shift; + const int v_shift = i == 0 ? 0 : v_chroma_shift; + + pic->linesize[i] = pool->linesize[i]; + + pic->buf[i] = av_buffer_pool_get(pool->pools[i]); + if (!pic->buf[i]) + goto fail; + + // no edge if EDGE EMU or not planar YUV + if ((s->flags & CODEC_FLAG_EMU_EDGE) || !pool->pools[2]) + pic->data[i] = pic->buf[i]->data; + else { + pic->data[i] = pic->buf[i]->data + + FFALIGN((pic->linesize[i] * EDGE_WIDTH >> v_shift) + + (pixel_size * EDGE_WIDTH >> h_shift), pool->stride_align[i]); + } + } + for (; i < AV_NUM_DATA_POINTERS; i++) { + pic->data[i] = NULL; + pic->linesize[i] = 0; + } + if (pic->data[1] && !pic->data[2]) + avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt); + + if (s->debug & FF_DEBUG_BUFFERS) + av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic); + + return 0; +fail: + av_frame_unref(pic); + return AVERROR(ENOMEM); +} + +void avpriv_color_frame(AVFrame *frame, const int c[4]) +{ + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format); + int p, y, x; + + av_assert0(desc->flags & PIX_FMT_PLANAR); + + for (p = 0; p<desc->nb_components; p++) { + uint8_t *dst = frame->data[p]; + int is_chroma = p == 1 || p == 2; + int bytes = -((-frame->width) >> (is_chroma ? desc->log2_chroma_w : 0)); + for (y = 0; y<-((-frame->height) >> (is_chroma ? desc->log2_chroma_h : 0)); y++){ + if (desc->comp[0].depth_minus1 >= 8) { + for (x = 0; x<bytes; x++) + ((uint16_t*)dst)[x] = c[p]; + }else + memset(dst, c[p], bytes); + dst += frame->linesize[p]; + } + } +} + +int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags) +{ + int ret; + + if ((ret = update_frame_pool(avctx, frame)) < 0) + return ret; + +#if FF_API_GET_BUFFER + frame->type = FF_BUFFER_TYPE_INTERNAL; +#endif + + switch (avctx->codec_type) { + case AVMEDIA_TYPE_VIDEO: + return video_get_buffer(avctx, frame); + case AVMEDIA_TYPE_AUDIO: + return audio_get_buffer(avctx, frame); + default: + return -1; + } +} + +int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame) +{ + if (avctx->pkt) { + frame->pkt_pts = avctx->pkt->pts; + av_frame_set_pkt_pos (frame, avctx->pkt->pos); + av_frame_set_pkt_duration(frame, avctx->pkt->duration); + av_frame_set_pkt_size (frame, avctx->pkt->size); + } else { + frame->pkt_pts = AV_NOPTS_VALUE; + av_frame_set_pkt_pos (frame, -1); + av_frame_set_pkt_duration(frame, 0); + av_frame_set_pkt_size (frame, -1); + } + frame->reordered_opaque = avctx->reordered_opaque; + + switch (avctx->codec->type) { + case AVMEDIA_TYPE_VIDEO: + if (!frame->width) + frame->width = avctx->width; + if (!frame->height) + frame->height = avctx->height; + if (frame->format < 0) + frame->format = avctx->pix_fmt; + if (!frame->sample_aspect_ratio.num) + frame->sample_aspect_ratio = avctx->sample_aspect_ratio; + break; + case AVMEDIA_TYPE_AUDIO: + if (!frame->sample_rate) + frame->sample_rate = avctx->sample_rate; + if (frame->format < 0) + frame->format = avctx->sample_fmt; + if (!frame->channel_layout) { + if (avctx->channel_layout) { + if (av_get_channel_layout_nb_channels(avctx->channel_layout) != + avctx->channels) { + av_log(avctx, AV_LOG_ERROR, "Inconsistent channel " + "configuration.\n"); + return AVERROR(EINVAL); + } + + frame->channel_layout = avctx->channel_layout; + } else { + if (avctx->channels > FF_SANE_NB_CHANNELS) { + av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n", + avctx->channels); + return AVERROR(ENOSYS); + } + + frame->channel_layout = av_get_default_channel_layout(avctx->channels); + } + } + av_frame_set_channels(frame, avctx->channels); + break; + } + return 0; +} + +#if FF_API_GET_BUFFER +int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame) +{ + return avcodec_default_get_buffer2(avctx, frame, 0); +} + +typedef struct CompatReleaseBufPriv { + AVCodecContext avctx; + AVFrame frame; +} CompatReleaseBufPriv; + +static void compat_free_buffer(void *opaque, uint8_t *data) +{ + CompatReleaseBufPriv *priv = opaque; + if (priv->avctx.release_buffer) + priv->avctx.release_buffer(&priv->avctx, &priv->frame); + av_freep(&priv); +} + +static void compat_release_buffer(void *opaque, uint8_t *data) +{ + AVBufferRef *buf = opaque; + av_buffer_unref(&buf); +} +#endif + +static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags) +{ + int ret; + + if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) { + if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) { + av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n"); + return AVERROR(EINVAL); + } + } + if ((ret = ff_init_buffer_info(avctx, frame)) < 0) + return ret; + +#if FF_API_GET_BUFFER + /* + * Wrap an old get_buffer()-allocated buffer in an bunch of AVBuffers. + * We wrap each plane in its own AVBuffer. Each of those has a reference to + * a dummy AVBuffer as its private data, unreffing it on free. + * When all the planes are freed, the dummy buffer's free callback calls + * release_buffer(). + */ + if (avctx->get_buffer) { + CompatReleaseBufPriv *priv = NULL; + AVBufferRef *dummy_buf = NULL; + int planes, i, ret; + + if (flags & AV_GET_BUFFER_FLAG_REF) + frame->reference = 1; + + ret = avctx->get_buffer(avctx, frame); + if (ret < 0) + return ret; + + /* return if the buffers are already set up + * this would happen e.g. when a custom get_buffer() calls + * avcodec_default_get_buffer + */ + if (frame->buf[0]) + return 0; + + priv = av_mallocz(sizeof(*priv)); + if (!priv) { + ret = AVERROR(ENOMEM); + goto fail; + } + priv->avctx = *avctx; + priv->frame = *frame; + + dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0); + if (!dummy_buf) { + ret = AVERROR(ENOMEM); + goto fail; + } + +#define WRAP_PLANE(ref_out, data, data_size) \ +do { \ + AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \ + if (!dummy_ref) { \ + ret = AVERROR(ENOMEM); \ + goto fail; \ + } \ + ref_out = av_buffer_create(data, data_size, compat_release_buffer, \ + dummy_ref, 0); \ + if (!ref_out) { \ + av_frame_unref(frame); \ + ret = AVERROR(ENOMEM); \ + goto fail; \ + } \ +} while (0) + + if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) { + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format); + + planes = av_pix_fmt_count_planes(frame->format); + if (!desc || planes <= 0) { + ret = AVERROR(EINVAL); + goto fail; + } + + for (i = 0; i < planes; i++) { + int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0; + int plane_size = (frame->height >> v_shift) * frame->linesize[i]; + + WRAP_PLANE(frame->buf[i], frame->data[i], plane_size); + } + } else { + int planar = av_sample_fmt_is_planar(frame->format); + planes = planar ? avctx->channels : 1; + + if (planes > FF_ARRAY_ELEMS(frame->buf)) { + frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf); + frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) * + frame->nb_extended_buf); + if (!frame->extended_buf) { + ret = AVERROR(ENOMEM); + goto fail; + } + } + + for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++) + WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]); + + for (i = 0; i < frame->nb_extended_buf; i++) + WRAP_PLANE(frame->extended_buf[i], + frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)], + frame->linesize[0]); + } + + av_buffer_unref(&dummy_buf); + + return 0; + +fail: + avctx->release_buffer(avctx, frame); + av_freep(&priv); + av_buffer_unref(&dummy_buf); + return ret; + } +#endif + + return avctx->get_buffer2(avctx, frame, flags); +} + +int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags) +{ + int ret = get_buffer_internal(avctx, frame, flags); + if (ret < 0) + av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + return ret; +} + +static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame) +{ + AVFrame tmp; + int ret; + + av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO); + + if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) { + av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n", + frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt)); + av_frame_unref(frame); + } + + ff_init_buffer_info(avctx, frame); + + if (!frame->data[0]) + return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF); + + if (av_frame_is_writable(frame)) + return 0; + + av_frame_move_ref(&tmp, frame); + + ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF); + if (ret < 0) { + av_frame_unref(&tmp); + return ret; + } + + av_image_copy(frame->data, frame->linesize, tmp.data, tmp.linesize, + frame->format, frame->width, frame->height); + + av_frame_unref(&tmp); + + return 0; +} + +int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame) +{ + int ret = reget_buffer_internal(avctx, frame); + if (ret < 0) + av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); + return ret; +} + +#if FF_API_GET_BUFFER +void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic) +{ + av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO); + + av_frame_unref(pic); +} + +int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic) +{ + av_assert0(0); +} +#endif + +int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size) +{ + int i; + + for (i = 0; i < count; i++) { + int r = func(c, (char *)arg + i * size); + if (ret) + ret[i] = r; + } + return 0; +} + +int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count) +{ + int i; + + for (i = 0; i < count; i++) { + int r = func(c, arg, i, 0); + if (ret) + ret[i] = r; + } + return 0; +} + +static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt) +{ + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); + return desc->flags & PIX_FMT_HWACCEL; +} + +enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt) +{ + while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt)) + ++fmt; + return fmt[0]; +} + +void avcodec_get_frame_defaults(AVFrame *frame) +{ +#if LIBAVCODEC_VERSION_MAJOR >= 55 + // extended_data should explicitly be freed when needed, this code is unsafe currently + // also this is not compatible to the <55 ABI/API + if (frame->extended_data != frame->data && 0) + av_freep(&frame->extended_data); +#endif + + memset(frame, 0, sizeof(AVFrame)); + + frame->pts = + frame->pkt_dts = + frame->pkt_pts = AV_NOPTS_VALUE; + av_frame_set_best_effort_timestamp(frame, AV_NOPTS_VALUE); + av_frame_set_pkt_duration (frame, 0); + av_frame_set_pkt_pos (frame, -1); + av_frame_set_pkt_size (frame, -1); + frame->key_frame = 1; + frame->sample_aspect_ratio = (AVRational) {0, 1 }; + frame->format = -1; /* unknown */ + frame->extended_data = frame->data; +} + +AVFrame *avcodec_alloc_frame(void) +{ + AVFrame *frame = av_malloc(sizeof(AVFrame)); + + if (frame == NULL) + return NULL; + + frame->extended_data = NULL; + avcodec_get_frame_defaults(frame); + + return frame; +} + +void avcodec_free_frame(AVFrame **frame) +{ + AVFrame *f; + + if (!frame || !*frame) + return; + + f = *frame; + + if (f->extended_data != f->data) + av_freep(&f->extended_data); + + av_freep(frame); +} + +#define MAKE_ACCESSORS(str, name, type, field) \ + type av_##name##_get_##field(const str *s) { return s->field; } \ + void av_##name##_set_##field(str *s, type v) { s->field = v; } + +MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase) +MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor) + +static void avcodec_get_subtitle_defaults(AVSubtitle *sub) +{ + memset(sub, 0, sizeof(*sub)); + sub->pts = AV_NOPTS_VALUE; +} + +static int get_bit_rate(AVCodecContext *ctx) +{ + int bit_rate; + int bits_per_sample; + + switch (ctx->codec_type) { + case AVMEDIA_TYPE_VIDEO: + case AVMEDIA_TYPE_DATA: + case AVMEDIA_TYPE_SUBTITLE: + case AVMEDIA_TYPE_ATTACHMENT: + bit_rate = ctx->bit_rate; + break; + case AVMEDIA_TYPE_AUDIO: + bits_per_sample = av_get_bits_per_sample(ctx->codec_id); + bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate; + break; + default: + bit_rate = 0; + break; + } + return bit_rate; +} + +#if FF_API_AVCODEC_OPEN +int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec) +{ + return avcodec_open2(avctx, codec, NULL); +} +#endif + +int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options) +{ + int ret = 0; + + ff_unlock_avcodec(); + + ret = avcodec_open2(avctx, codec, options); + + ff_lock_avcodec(avctx); + return ret; +} + +int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options) +{ + int ret = 0; + AVDictionary *tmp = NULL; + + if (avcodec_is_open(avctx)) + return 0; + + if ((!codec && !avctx->codec)) { + av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n"); + return AVERROR(EINVAL); + } + if ((codec && avctx->codec && codec != avctx->codec)) { + av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, " + "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name); + return AVERROR(EINVAL); + } + if (!codec) + codec = avctx->codec; + + if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE) + return AVERROR(EINVAL); + + if (options) + av_dict_copy(&tmp, *options, 0); + + ret = ff_lock_avcodec(avctx); + if (ret < 0) + return ret; + + avctx->internal = av_mallocz(sizeof(AVCodecInternal)); + if (!avctx->internal) { + ret = AVERROR(ENOMEM); + goto end; + } + + avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool)); + if (!avctx->internal->pool) { + ret = AVERROR(ENOMEM); + goto free_and_end; + } + + if (codec->priv_data_size > 0) { + if (!avctx->priv_data) { + avctx->priv_data = av_mallocz(codec->priv_data_size); + if (!avctx->priv_data) { + ret = AVERROR(ENOMEM); + goto end; + } + if (codec->priv_class) { + *(const AVClass **)avctx->priv_data = codec->priv_class; + av_opt_set_defaults(avctx->priv_data); + } + } + if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0) + goto free_and_end; + } else { + avctx->priv_data = NULL; + } + if ((ret = av_opt_set_dict(avctx, &tmp)) < 0) + goto free_and_end; + + // only call avcodec_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions + if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height && + (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) { + if (avctx->coded_width && avctx->coded_height) + avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height); + else if (avctx->width && avctx->height) + avcodec_set_dimensions(avctx, avctx->width, avctx->height); + } + + if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height) + && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0 + || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) { + av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n"); + avcodec_set_dimensions(avctx, 0, 0); + } + + /* if the decoder init function was already called previously, + * free the already allocated subtitle_header before overwriting it */ + if (av_codec_is_decoder(codec)) + av_freep(&avctx->subtitle_header); + + if (avctx->channels > FF_SANE_NB_CHANNELS) { + ret = AVERROR(EINVAL); + goto free_and_end; + } + + avctx->codec = codec; + if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) && + avctx->codec_id == AV_CODEC_ID_NONE) { + avctx->codec_type = codec->type; + avctx->codec_id = codec->id; + } + if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type + && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) { + av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n"); + ret = AVERROR(EINVAL); + goto free_and_end; + } + avctx->frame_number = 0; + avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id); + + if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL && + avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) { + const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder"; + AVCodec *codec2; + av_log(NULL, AV_LOG_ERROR, + "The %s '%s' is experimental but experimental codecs are not enabled, " + "add '-strict %d' if you want to use it.\n", + codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL); + codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id); + if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL)) + av_log(NULL, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n", + codec_string, codec2->name); + ret = AVERROR_EXPERIMENTAL; + goto free_and_end; + } + + if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && + (!avctx->time_base.num || !avctx->time_base.den)) { + avctx->time_base.num = 1; + avctx->time_base.den = avctx->sample_rate; + } + + if (!HAVE_THREADS) + av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n"); + + if (CONFIG_FRAME_THREAD_ENCODER) { + ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem + ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL); + ff_lock_avcodec(avctx); + if (ret < 0) + goto free_and_end; + } + + if (HAVE_THREADS && !avctx->thread_opaque + && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) { + ret = ff_thread_init(avctx); + if (ret < 0) { + goto free_and_end; + } + } + if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS)) + avctx->thread_count = 1; + + if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) { + av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n", + avctx->codec->max_lowres); + ret = AVERROR(EINVAL); + goto free_and_end; + } + + if (av_codec_is_encoder(avctx->codec)) { + int i; + if (avctx->codec->sample_fmts) { + for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) { + if (avctx->sample_fmt == avctx->codec->sample_fmts[i]) + break; + if (avctx->channels == 1 && + av_get_planar_sample_fmt(avctx->sample_fmt) == + av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) { + avctx->sample_fmt = avctx->codec->sample_fmts[i]; + break; + } + } + if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) { + char buf[128]; + snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt); + av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n", + (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf)); + ret = AVERROR(EINVAL); + goto free_and_end; + } + } + if (avctx->codec->pix_fmts) { + for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++) + if (avctx->pix_fmt == avctx->codec->pix_fmts[i]) + break; + if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE + && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG) + && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) { + char buf[128]; + snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt); + av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n", + (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf)); + ret = AVERROR(EINVAL); + goto free_and_end; + } + } + if (avctx->codec->supported_samplerates) { + for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++) + if (avctx->sample_rate == avctx->codec->supported_samplerates[i]) + break; + if (avctx->codec->supported_samplerates[i] == 0) { + av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n", + avctx->sample_rate); + ret = AVERROR(EINVAL); + goto free_and_end; + } + } + if (avctx->codec->channel_layouts) { + if (!avctx->channel_layout) { + av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n"); + } else { + for (i = 0; avctx->codec->channel_layouts[i] != 0; i++) + if (avctx->channel_layout == avctx->codec->channel_layouts[i]) + break; + if (avctx->codec->channel_layouts[i] == 0) { + char buf[512]; + av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout); + av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf); + ret = AVERROR(EINVAL); + goto free_and_end; + } + } + } + if (avctx->channel_layout && avctx->channels) { + int channels = av_get_channel_layout_nb_channels(avctx->channel_layout); + if (channels != avctx->channels) { + char buf[512]; + av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout); + av_log(avctx, AV_LOG_ERROR, + "Channel layout '%s' with %d channels does not match number of specified channels %d\n", + buf, channels, avctx->channels); + ret = AVERROR(EINVAL); + goto free_and_end; + } + } else if (avctx->channel_layout) { + avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout); + } + if(avctx->codec_type == AVMEDIA_TYPE_VIDEO && + avctx->codec_id != AV_CODEC_ID_PNG // For mplayer + ) { + if (avctx->width <= 0 || avctx->height <= 0) { + av_log(avctx, AV_LOG_ERROR, "dimensions not set\n"); + ret = AVERROR(EINVAL); + goto free_and_end; + } + } + if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO) + && avctx->bit_rate>0 && avctx->bit_rate<1000) { + av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate); + } + + if (!avctx->rc_initial_buffer_occupancy) + avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4; + } + + avctx->pts_correction_num_faulty_pts = + avctx->pts_correction_num_faulty_dts = 0; + avctx->pts_correction_last_pts = + avctx->pts_correction_last_dts = INT64_MIN; + + if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME) + || avctx->internal->frame_thread_encoder)) { + ret = avctx->codec->init(avctx); + if (ret < 0) { + goto free_and_end; + } + } + + ret=0; + + if (av_codec_is_decoder(avctx->codec)) { + if (!avctx->bit_rate) + avctx->bit_rate = get_bit_rate(avctx); + /* validate channel layout from the decoder */ + if (avctx->channel_layout) { + int channels = av_get_channel_layout_nb_channels(avctx->channel_layout); + if (!avctx->channels) + avctx->channels = channels; + else if (channels != avctx->channels) { + char buf[512]; + av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout); + av_log(avctx, AV_LOG_WARNING, + "Channel layout '%s' with %d channels does not match specified number of channels %d: " + "ignoring specified channel layout\n", + buf, channels, avctx->channels); + avctx->channel_layout = 0; + } + } + if (avctx->channels && avctx->channels < 0 || + avctx->channels > FF_SANE_NB_CHANNELS) { + ret = AVERROR(EINVAL); + goto free_and_end; + } + if (avctx->sub_charenc) { + if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) { + av_log(avctx, AV_LOG_ERROR, "Character encoding is only " + "supported with subtitles codecs\n"); + ret = AVERROR(EINVAL); + goto free_and_end; + } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) { + av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, " + "subtitles character encoding will be ignored\n", + avctx->codec_descriptor->name); + avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING; + } else { + /* input character encoding is set for a text based subtitle + * codec at this point */ + if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC) + avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER; + + if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) { +#if CONFIG_ICONV + iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc); + if (cd == (iconv_t)-1) { + av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context " + "with input character encoding \"%s\"\n", avctx->sub_charenc); + ret = AVERROR(errno); + goto free_and_end; + } + iconv_close(cd); +#else + av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles " + "conversion needs a libavcodec built with iconv support " + "for this codec\n"); + ret = AVERROR(ENOSYS); + goto free_and_end; +#endif + } + } + } + } +end: + ff_unlock_avcodec(); + if (options) { + av_dict_free(options); + *options = tmp; + } + + return ret; +free_and_end: + av_dict_free(&tmp); + av_freep(&avctx->priv_data); + if (avctx->internal) + av_freep(&avctx->internal->pool); + av_freep(&avctx->internal); + avctx->codec = NULL; + goto end; +} + +int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int size) +{ + if (size < 0 || avpkt->size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) { + av_log(avctx, AV_LOG_ERROR, "Size %d invalid\n", size); + return AVERROR(EINVAL); + } + + if (avctx) { + av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer); + if (!avpkt->data || avpkt->size < size) { + av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size); + avpkt->data = avctx->internal->byte_buffer; + avpkt->size = avctx->internal->byte_buffer_size; + avpkt->destruct = NULL; + } + } + + if (avpkt->data) { + AVBufferRef *buf = avpkt->buf; +#if FF_API_DESTRUCT_PACKET + void *destruct = avpkt->destruct; +#endif + + if (avpkt->size < size) { + av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %d)\n", avpkt->size, size); + return AVERROR(EINVAL); + } + + av_init_packet(avpkt); +#if FF_API_DESTRUCT_PACKET + avpkt->destruct = destruct; +#endif + avpkt->buf = buf; + avpkt->size = size; + return 0; + } else { + int ret = av_new_packet(avpkt, size); + if (ret < 0) + av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %d\n", size); + return ret; + } +} + +int ff_alloc_packet(AVPacket *avpkt, int size) +{ + return ff_alloc_packet2(NULL, avpkt, size); +} + +/** + * Pad last frame with silence. + */ +static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src) +{ + AVFrame *frame = NULL; + uint8_t *buf = NULL; + int ret; + + if (!(frame = avcodec_alloc_frame())) + return AVERROR(ENOMEM); + *frame = *src; + + if ((ret = av_samples_get_buffer_size(&frame->linesize[0], s->channels, + s->frame_size, s->sample_fmt, 0)) < 0) + goto fail; + + if (!(buf = av_malloc(ret))) { + ret = AVERROR(ENOMEM); + goto fail; + } + + frame->nb_samples = s->frame_size; + if ((ret = avcodec_fill_audio_frame(frame, s->channels, s->sample_fmt, + buf, ret, 0)) < 0) + goto fail; + if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0, + src->nb_samples, s->channels, s->sample_fmt)) < 0) + goto fail; + if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples, + frame->nb_samples - src->nb_samples, + s->channels, s->sample_fmt)) < 0) + goto fail; + + *dst = frame; + + return 0; + +fail: + if (frame->extended_data != frame->data) + av_freep(&frame->extended_data); + av_freep(&buf); + av_freep(&frame); + return ret; +} + +int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx, + AVPacket *avpkt, + const AVFrame *frame, + int *got_packet_ptr) +{ + AVFrame tmp; + AVFrame *padded_frame = NULL; + int ret; + AVPacket user_pkt = *avpkt; + int needs_realloc = !user_pkt.data; + + *got_packet_ptr = 0; + + if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) { + av_free_packet(avpkt); + av_init_packet(avpkt); + return 0; + } + + /* ensure that extended_data is properly set */ + if (frame && !frame->extended_data) { + if (av_sample_fmt_is_planar(avctx->sample_fmt) && + avctx->channels > AV_NUM_DATA_POINTERS) { + av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, " + "with more than %d channels, but extended_data is not set.\n", + AV_NUM_DATA_POINTERS); + return AVERROR(EINVAL); + } + av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n"); + + tmp = *frame; + tmp.extended_data = tmp.data; + frame = &tmp; + } + + /* check for valid frame size */ + if (frame) { + if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) { + if (frame->nb_samples > avctx->frame_size) { + av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n"); + return AVERROR(EINVAL); + } + } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) { + if (frame->nb_samples < avctx->frame_size && + !avctx->internal->last_audio_frame) { + ret = pad_last_frame(avctx, &padded_frame, frame); + if (ret < 0) + return ret; + + frame = padded_frame; + avctx->internal->last_audio_frame = 1; + } + + if (frame->nb_samples != avctx->frame_size) { + av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size); + ret = AVERROR(EINVAL); + goto end; + } + } + } + + ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr); + if (!ret) { + if (*got_packet_ptr) { + if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) { + if (avpkt->pts == AV_NOPTS_VALUE) + avpkt->pts = frame->pts; + if (!avpkt->duration) + avpkt->duration = ff_samples_to_time_base(avctx, + frame->nb_samples); + } + avpkt->dts = avpkt->pts; + } else { + avpkt->size = 0; + } + } + if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) { + needs_realloc = 0; + if (user_pkt.data) { + if (user_pkt.size >= avpkt->size) { + memcpy(user_pkt.data, avpkt->data, avpkt->size); + } else { + av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size); + avpkt->size = user_pkt.size; + ret = -1; + } + avpkt->buf = user_pkt.buf; + avpkt->data = user_pkt.data; + avpkt->destruct = user_pkt.destruct; + } else { + if (av_dup_packet(avpkt) < 0) { + ret = AVERROR(ENOMEM); + } + } + } + + if (!ret) { + if (needs_realloc && avpkt->data) { + ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE); + if (ret >= 0) + avpkt->data = avpkt->buf->data; + } + + avctx->frame_number++; + } + + if (ret < 0 || !*got_packet_ptr) { + av_free_packet(avpkt); + av_init_packet(avpkt); + goto end; + } + + /* NOTE: if we add any audio encoders which output non-keyframe packets, + * this needs to be moved to the encoders, but for now we can do it + * here to simplify things */ + avpkt->flags |= AV_PKT_FLAG_KEY; + +end: + if (padded_frame) { + av_freep(&padded_frame->data[0]); + if (padded_frame->extended_data != padded_frame->data) + av_freep(&padded_frame->extended_data); + av_freep(&padded_frame); + } + + return ret; +} + +#if FF_API_OLD_ENCODE_AUDIO +int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, + uint8_t *buf, int buf_size, + const short *samples) +{ + AVPacket pkt; + AVFrame frame0 = { { 0 } }; + AVFrame *frame; + int ret, samples_size, got_packet; + + av_init_packet(&pkt); + pkt.data = buf; + pkt.size = buf_size; + + if (samples) { + frame = &frame0; + avcodec_get_frame_defaults(frame); + + if (avctx->frame_size) { + frame->nb_samples = avctx->frame_size; + } else { + /* if frame_size is not set, the number of samples must be + * calculated from the buffer size */ + int64_t nb_samples; + if (!av_get_bits_per_sample(avctx->codec_id)) { + av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not " + "support this codec\n"); + return AVERROR(EINVAL); + } + nb_samples = (int64_t)buf_size * 8 / + (av_get_bits_per_sample(avctx->codec_id) * + avctx->channels); + if (nb_samples >= INT_MAX) + return AVERROR(EINVAL); + frame->nb_samples = nb_samples; + } + + /* it is assumed that the samples buffer is large enough based on the + * relevant parameters */ + samples_size = av_samples_get_buffer_size(NULL, avctx->channels, + frame->nb_samples, + avctx->sample_fmt, 1); + if ((ret = avcodec_fill_audio_frame(frame, avctx->channels, + avctx->sample_fmt, + (const uint8_t *)samples, + samples_size, 1)) < 0) + return ret; + + /* fabricate frame pts from sample count. + * this is needed because the avcodec_encode_audio() API does not have + * a way for the user to provide pts */ + if (avctx->sample_rate && avctx->time_base.num) + frame->pts = ff_samples_to_time_base(avctx, + avctx->internal->sample_count); + else + frame->pts = AV_NOPTS_VALUE; + avctx->internal->sample_count += frame->nb_samples; + } else { + frame = NULL; + } + + got_packet = 0; + ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet); + if (!ret && got_packet && avctx->coded_frame) { + avctx->coded_frame->pts = pkt.pts; + avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY); + } + /* free any side data since we cannot return it */ + ff_packet_free_side_data(&pkt); + + if (frame && frame->extended_data != frame->data) + av_freep(&frame->extended_data); + + return ret ? ret : pkt.size; +} + +#endif + +#if FF_API_OLD_ENCODE_VIDEO +int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, + const AVFrame *pict) +{ + AVPacket pkt; + int ret, got_packet = 0; + + if (buf_size < FF_MIN_BUFFER_SIZE) { + av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n"); + return -1; + } + + av_init_packet(&pkt); + pkt.data = buf; + pkt.size = buf_size; + + ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet); + if (!ret && got_packet && avctx->coded_frame) { + avctx->coded_frame->pts = pkt.pts; + avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY); + } + + /* free any side data since we cannot return it */ + if (pkt.side_data_elems > 0) { + int i; + for (i = 0; i < pkt.side_data_elems; i++) + av_free(pkt.side_data[i].data); + av_freep(&pkt.side_data); + pkt.side_data_elems = 0; + } + + return ret ? ret : pkt.size; +} + +#endif + +int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx, + AVPacket *avpkt, + const AVFrame *frame, + int *got_packet_ptr) +{ + int ret; + AVPacket user_pkt = *avpkt; + int needs_realloc = !user_pkt.data; + + *got_packet_ptr = 0; + + if(CONFIG_FRAME_THREAD_ENCODER && + avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME)) + return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr); + + if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out) + avctx->stats_out[0] = '\0'; + + if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) { + av_free_packet(avpkt); + av_init_packet(avpkt); + avpkt->size = 0; + return 0; + } + + if (av_image_check_size(avctx->width, avctx->height, 0, avctx)) + return AVERROR(EINVAL); + + av_assert0(avctx->codec->encode2); + + ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr); + av_assert0(ret <= 0); + + if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) { + needs_realloc = 0; + if (user_pkt.data) { + if (user_pkt.size >= avpkt->size) { + memcpy(user_pkt.data, avpkt->data, avpkt->size); + } else { + av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size); + avpkt->size = user_pkt.size; + ret = -1; + } + avpkt->buf = user_pkt.buf; + avpkt->data = user_pkt.data; + avpkt->destruct = user_pkt.destruct; + } else { + if (av_dup_packet(avpkt) < 0) { + ret = AVERROR(ENOMEM); + } + } + } + + if (!ret) { + if (!*got_packet_ptr) + avpkt->size = 0; + else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) + avpkt->pts = avpkt->dts = frame->pts; + + if (needs_realloc && avpkt->data) { + ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE); + if (ret >= 0) + avpkt->data = avpkt->buf->data; + } + + avctx->frame_number++; + } + + if (ret < 0 || !*got_packet_ptr) + av_free_packet(avpkt); + + emms_c(); + return ret; +} + +int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, + const AVSubtitle *sub) +{ + int ret; + if (sub->start_display_time) { + av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n"); + return -1; + } + + ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub); + avctx->frame_number++; + return ret; +} + +/** + * Attempt to guess proper monotonic timestamps for decoded video frames + * which might have incorrect times. Input timestamps may wrap around, in + * which case the output will as well. + * + * @param pts the pts field of the decoded AVPacket, as passed through + * AVFrame.pkt_pts + * @param dts the dts field of the decoded AVPacket + * @return one of the input values, may be AV_NOPTS_VALUE + */ +static int64_t guess_correct_pts(AVCodecContext *ctx, + int64_t reordered_pts, int64_t dts) +{ + int64_t pts = AV_NOPTS_VALUE; + + if (dts != AV_NOPTS_VALUE) { + ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts; + ctx->pts_correction_last_dts = dts; + } + if (reordered_pts != AV_NOPTS_VALUE) { + ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts; + ctx->pts_correction_last_pts = reordered_pts; + } + if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE) + && reordered_pts != AV_NOPTS_VALUE) + pts = reordered_pts; + else + pts = dts; + + return pts; +} + +static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt) +{ + int size = 0; + const uint8_t *data; + uint32_t flags; + + if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) + return; + + data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size); + if (!data || size < 4) + return; + flags = bytestream_get_le32(&data); + size -= 4; + if (size < 4) /* Required for any of the changes */ + return; + if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) { + avctx->channels = bytestream_get_le32(&data); + size -= 4; + } + if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) { + if (size < 8) + return; + avctx->channel_layout = bytestream_get_le64(&data); + size -= 8; + } + if (size < 4) + return; + if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) { + avctx->sample_rate = bytestream_get_le32(&data); + size -= 4; + } + if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) { + if (size < 8) + return; + avctx->width = bytestream_get_le32(&data); + avctx->height = bytestream_get_le32(&data); + avcodec_set_dimensions(avctx, avctx->width, avctx->height); + size -= 8; + } +} + +static int add_metadata_from_side_data(AVCodecContext *avctx, AVFrame *frame) +{ + int size, ret = 0; + const uint8_t *side_metadata; + const uint8_t *end; + + side_metadata = av_packet_get_side_data(avctx->pkt, + AV_PKT_DATA_STRINGS_METADATA, &size); + if (!side_metadata) + goto end; + end = side_metadata + size; + while (side_metadata < end) { + const uint8_t *key = side_metadata; + const uint8_t *val = side_metadata + strlen(key) + 1; + int ret = av_dict_set(avpriv_frame_get_metadatap(frame), key, val, 0); + if (ret < 0) + break; + side_metadata = val + strlen(val) + 1; + } +end: + return ret; +} + +int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, + int *got_picture_ptr, + const AVPacket *avpkt) +{ + AVCodecInternal *avci = avctx->internal; + int ret; + // copy to ensure we do not change avpkt + AVPacket tmp = *avpkt; + + if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) { + av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n"); + return AVERROR(EINVAL); + } + + *got_picture_ptr = 0; + if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx)) + return AVERROR(EINVAL); + + avcodec_get_frame_defaults(picture); + + if (!avctx->refcounted_frames) + av_frame_unref(&avci->to_free); + + if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) { + int did_split = av_packet_split_side_data(&tmp); + apply_param_change(avctx, &tmp); + avctx->pkt = &tmp; + if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME) + ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr, + &tmp); + else { + ret = avctx->codec->decode(avctx, picture, got_picture_ptr, + &tmp); + picture->pkt_dts = avpkt->dts; + + if(!avctx->has_b_frames){ + av_frame_set_pkt_pos(picture, avpkt->pos); + } + //FIXME these should be under if(!avctx->has_b_frames) + /* get_buffer is supposed to set frame parameters */ + if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) { + if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio; + if (!picture->width) picture->width = avctx->width; + if (!picture->height) picture->height = avctx->height; + if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt; + } + } + add_metadata_from_side_data(avctx, picture); + + emms_c(); //needed to avoid an emms_c() call before every return; + + avctx->pkt = NULL; + if (did_split) { + ff_packet_free_side_data(&tmp); + if(ret == tmp.size) + ret = avpkt->size; + } + + if (ret < 0 && picture->data[0]) + av_frame_unref(picture); + + if (*got_picture_ptr) { + if (!avctx->refcounted_frames) { + avci->to_free = *picture; + avci->to_free.extended_data = avci->to_free.data; + } + + avctx->frame_number++; + av_frame_set_best_effort_timestamp(picture, + guess_correct_pts(avctx, + picture->pkt_pts, + picture->pkt_dts)); + } + } else + ret = 0; + + /* many decoders assign whole AVFrames, thus overwriting extended_data; + * make sure it's set correctly */ + picture->extended_data = picture->data; + + return ret; +} + +#if FF_API_OLD_DECODE_AUDIO +int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples, + int *frame_size_ptr, + AVPacket *avpkt) +{ + AVFrame frame = { { 0 } }; + int ret, got_frame = 0; + + if (avctx->get_buffer != avcodec_default_get_buffer) { + av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with" + "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n"); + av_log(avctx, AV_LOG_ERROR, "Please port your application to " + "avcodec_decode_audio4()\n"); + avctx->get_buffer = avcodec_default_get_buffer; + avctx->release_buffer = avcodec_default_release_buffer; + } + + ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt); + + if (ret >= 0 && got_frame) { + int ch, plane_size; + int planar = av_sample_fmt_is_planar(avctx->sample_fmt); + int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels, + frame.nb_samples, + avctx->sample_fmt, 1); + if (*frame_size_ptr < data_size) { + av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for " + "the current frame (%d < %d)\n", *frame_size_ptr, data_size); + return AVERROR(EINVAL); + } + + memcpy(samples, frame.extended_data[0], plane_size); + + if (planar && avctx->channels > 1) { + uint8_t *out = ((uint8_t *)samples) + plane_size; + for (ch = 1; ch < avctx->channels; ch++) { + memcpy(out, frame.extended_data[ch], plane_size); + out += plane_size; + } + } + *frame_size_ptr = data_size; + } else { + *frame_size_ptr = 0; + } + return ret; +} + +#endif + +int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx, + AVFrame *frame, + int *got_frame_ptr, + const AVPacket *avpkt) +{ + AVCodecInternal *avci = avctx->internal; + int planar, channels; + int ret = 0; + + *got_frame_ptr = 0; + + if (!avpkt->data && avpkt->size) { + av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n"); + return AVERROR(EINVAL); + } + if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) { + av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n"); + return AVERROR(EINVAL); + } + + avcodec_get_frame_defaults(frame); + + if (!avctx->refcounted_frames) + av_frame_unref(&avci->to_free); + + if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) { + uint8_t *side; + int side_size; + // copy to ensure we do not change avpkt + AVPacket tmp = *avpkt; + int did_split = av_packet_split_side_data(&tmp); + apply_param_change(avctx, &tmp); + + avctx->pkt = &tmp; + ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp); + if (ret >= 0 && *got_frame_ptr) { + add_metadata_from_side_data(avctx, frame); + avctx->frame_number++; + frame->pkt_dts = avpkt->dts; + av_frame_set_best_effort_timestamp(frame, + guess_correct_pts(avctx, + frame->pkt_pts, + frame->pkt_dts)); + if (frame->format == AV_SAMPLE_FMT_NONE) + frame->format = avctx->sample_fmt; + if (!frame->channel_layout) + frame->channel_layout = avctx->channel_layout; + if (!av_frame_get_channels(frame)) + av_frame_set_channels(frame, avctx->channels); + if (!frame->sample_rate) + frame->sample_rate = avctx->sample_rate; + if (!avctx->refcounted_frames) { + avci->to_free = *frame; + avci->to_free.extended_data = avci->to_free.data; + } + } + + side= av_packet_get_side_data(avctx->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size); + if(side && side_size>=10) { + avctx->internal->skip_samples = AV_RL32(side); + av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n", + avctx->internal->skip_samples); + } + if (avctx->internal->skip_samples && *got_frame_ptr) { + if(frame->nb_samples <= avctx->internal->skip_samples){ + *got_frame_ptr = 0; + avctx->internal->skip_samples -= frame->nb_samples; + av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n", + avctx->internal->skip_samples); + } else { + av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples, + frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format); + if(avctx->pkt_timebase.num && avctx->sample_rate) { + int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples, + (AVRational){1, avctx->sample_rate}, + avctx->pkt_timebase); + if(frame->pkt_pts!=AV_NOPTS_VALUE) + frame->pkt_pts += diff_ts; + if(frame->pkt_dts!=AV_NOPTS_VALUE) + frame->pkt_dts += diff_ts; + if (av_frame_get_pkt_duration(frame) >= diff_ts) + av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts); + } else { + av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n"); + } + av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n", + avctx->internal->skip_samples, frame->nb_samples); + frame->nb_samples -= avctx->internal->skip_samples; + avctx->internal->skip_samples = 0; + } + } + + avctx->pkt = NULL; + if (did_split) { + ff_packet_free_side_data(&tmp); + if(ret == tmp.size) + ret = avpkt->size; + } + + if (ret < 0 && frame->data[0]) + av_frame_unref(frame); + } + + /* many decoders assign whole AVFrames, thus overwriting extended_data; + * make sure it's set correctly; assume decoders that actually use + * extended_data are doing it correctly */ + if (*got_frame_ptr) { + planar = av_sample_fmt_is_planar(frame->format); + channels = av_frame_get_channels(frame); + if (!(planar && channels > AV_NUM_DATA_POINTERS)) + frame->extended_data = frame->data; + } else { + frame->extended_data = NULL; + } + + return ret; +} + +#define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */ +static int recode_subtitle(AVCodecContext *avctx, + AVPacket *outpkt, const AVPacket *inpkt) +{ +#if CONFIG_ICONV + iconv_t cd = (iconv_t)-1; + int ret = 0; + char *inb, *outb; + size_t inl, outl; + AVPacket tmp; +#endif + + if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER) + return 0; + +#if CONFIG_ICONV + cd = iconv_open("UTF-8", avctx->sub_charenc); + av_assert0(cd != (iconv_t)-1); + + inb = inpkt->data; + inl = inpkt->size; + + if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) { + av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n"); + ret = AVERROR(ENOMEM); + goto end; + } + + ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES); + if (ret < 0) + goto end; + outpkt->buf = tmp.buf; + outpkt->data = tmp.data; + outpkt->size = tmp.size; + outb = outpkt->data; + outl = outpkt->size; + + if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 || + iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 || + outl >= outpkt->size || inl != 0) { + av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" " + "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc); + av_free_packet(&tmp); + ret = AVERROR(errno); + goto end; + } + outpkt->size -= outl; + outpkt->data[outpkt->size - 1] = '\0'; + +end: + if (cd != (iconv_t)-1) + iconv_close(cd); + return ret; +#else + av_assert0(!"requesting subtitles recoding without iconv"); +#endif +} + +int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, + int *got_sub_ptr, + AVPacket *avpkt) +{ + int ret = 0; + + if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) { + av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n"); + return AVERROR(EINVAL); + } + + *got_sub_ptr = 0; + avcodec_get_subtitle_defaults(sub); + + if (avpkt->size) { + AVPacket pkt_recoded; + AVPacket tmp = *avpkt; + int did_split = av_packet_split_side_data(&tmp); + //apply_param_change(avctx, &tmp); + + pkt_recoded = tmp; + ret = recode_subtitle(avctx, &pkt_recoded, &tmp); + if (ret < 0) { + *got_sub_ptr = 0; + } else { + avctx->pkt = &pkt_recoded; + + if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE) + sub->pts = av_rescale_q(avpkt->pts, + avctx->pkt_timebase, AV_TIME_BASE_Q); + ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded); + av_assert1((ret >= 0) >= !!*got_sub_ptr && + !!*got_sub_ptr >= !!sub->num_rects); + if (tmp.data != pkt_recoded.data) { // did we recode? + /* prevent from destroying side data from original packet */ + pkt_recoded.side_data = NULL; + pkt_recoded.side_data_elems = 0; + + av_free_packet(&pkt_recoded); + } + sub->format = !(avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB); + avctx->pkt = NULL; + } + + if (did_split) { + ff_packet_free_side_data(&tmp); + if(ret == tmp.size) + ret = avpkt->size; + } + + if (*got_sub_ptr) + avctx->frame_number++; + } + + return ret; +} + +void avsubtitle_free(AVSubtitle *sub) +{ + int i; + + for (i = 0; i < sub->num_rects; i++) { + av_freep(&sub->rects[i]->pict.data[0]); + av_freep(&sub->rects[i]->pict.data[1]); + av_freep(&sub->rects[i]->pict.data[2]); + av_freep(&sub->rects[i]->pict.data[3]); + av_freep(&sub->rects[i]->text); + av_freep(&sub->rects[i]->ass); + av_freep(&sub->rects[i]); + } + + av_freep(&sub->rects); + + memset(sub, 0, sizeof(AVSubtitle)); +} + +av_cold int ff_codec_close_recursive(AVCodecContext *avctx) +{ + int ret = 0; + + ff_unlock_avcodec(); + + ret = avcodec_close(avctx); + + ff_lock_avcodec(NULL); + return ret; +} + +av_cold int avcodec_close(AVCodecContext *avctx) +{ + int ret = ff_lock_avcodec(avctx); + if (ret < 0) + return ret; + + if (avcodec_is_open(avctx)) { + FramePool *pool = avctx->internal->pool; + int i; + if (CONFIG_FRAME_THREAD_ENCODER && + avctx->internal->frame_thread_encoder && avctx->thread_count > 1) { + ff_unlock_avcodec(); + ff_frame_thread_encoder_free(avctx); + ff_lock_avcodec(avctx); + } + if (HAVE_THREADS && avctx->thread_opaque) + ff_thread_free(avctx); + if (avctx->codec && avctx->codec->close) + avctx->codec->close(avctx); + avctx->coded_frame = NULL; + avctx->internal->byte_buffer_size = 0; + av_freep(&avctx->internal->byte_buffer); + if (!avctx->refcounted_frames) + av_frame_unref(&avctx->internal->to_free); + for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++) + av_buffer_pool_uninit(&pool->pools[i]); + av_freep(&avctx->internal->pool); + av_freep(&avctx->internal); + } + + if (avctx->priv_data && avctx->codec && avctx->codec->priv_class) + av_opt_free(avctx->priv_data); + av_opt_free(avctx); + av_freep(&avctx->priv_data); + if (av_codec_is_encoder(avctx->codec)) + av_freep(&avctx->extradata); + avctx->codec = NULL; + avctx->active_thread_type = 0; + + ff_unlock_avcodec(); + return 0; +} + +static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id) +{ + switch(id){ + //This is for future deprecatec codec ids, its empty since + //last major bump but will fill up again over time, please don't remove it +// case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO; + case AV_CODEC_ID_OPUS_DEPRECATED: return AV_CODEC_ID_OPUS; + case AV_CODEC_ID_TAK_DEPRECATED : return AV_CODEC_ID_TAK; + default : return id; + } +} + +static AVCodec *find_encdec(enum AVCodecID id, int encoder) +{ + AVCodec *p, *experimental = NULL; + p = first_avcodec; + id= remap_deprecated_codec_id(id); + while (p) { + if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) && + p->id == id) { + if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) { + experimental = p; + } else + return p; + } + p = p->next; + } + return experimental; +} + +AVCodec *avcodec_find_encoder(enum AVCodecID id) +{ + return find_encdec(id, 1); +} + +AVCodec *avcodec_find_encoder_by_name(const char *name) +{ + AVCodec *p; + if (!name) + return NULL; + p = first_avcodec; + while (p) { + if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0) + return p; + p = p->next; + } + return NULL; +} + +AVCodec *avcodec_find_decoder(enum AVCodecID id) +{ + return find_encdec(id, 0); +} + +AVCodec *avcodec_find_decoder_by_name(const char *name) +{ + AVCodec *p; + if (!name) + return NULL; + p = first_avcodec; + while (p) { + if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0) + return p; + p = p->next; + } + return NULL; +} + +const char *avcodec_get_name(enum AVCodecID id) +{ + const AVCodecDescriptor *cd; + AVCodec *codec; + + if (id == AV_CODEC_ID_NONE) + return "none"; + cd = avcodec_descriptor_get(id); + if (cd) + return cd->name; + av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id); + codec = avcodec_find_decoder(id); + if (codec) + return codec->name; + codec = avcodec_find_encoder(id); + if (codec) + return codec->name; + return "unknown_codec"; +} + +size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag) +{ + int i, len, ret = 0; + +#define TAG_PRINT(x) \ + (((x) >= '0' && (x) <= '9') || \ + ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \ + ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_')) + + for (i = 0; i < 4; i++) { + len = snprintf(buf, buf_size, + TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF); + buf += len; + buf_size = buf_size > len ? buf_size - len : 0; + ret += len; + codec_tag >>= 8; + } + return ret; +} + +void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode) +{ + const char *codec_type; + const char *codec_name; + const char *profile = NULL; + const AVCodec *p; + int bitrate; + AVRational display_aspect_ratio; + + if (!buf || buf_size <= 0) + return; + codec_type = av_get_media_type_string(enc->codec_type); + codec_name = avcodec_get_name(enc->codec_id); + if (enc->profile != FF_PROFILE_UNKNOWN) { + if (enc->codec) + p = enc->codec; + else + p = encode ? avcodec_find_encoder(enc->codec_id) : + avcodec_find_decoder(enc->codec_id); + if (p) + profile = av_get_profile_name(p, enc->profile); + } + + snprintf(buf, buf_size, "%s: %s%s", codec_type ? codec_type : "unknown", + codec_name, enc->mb_decision ? " (hq)" : ""); + buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */ + if (profile) + snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile); + if (enc->codec_tag) { + char tag_buf[32]; + av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag); + snprintf(buf + strlen(buf), buf_size - strlen(buf), + " (%s / 0x%04X)", tag_buf, enc->codec_tag); + } + + switch (enc->codec_type) { + case AVMEDIA_TYPE_VIDEO: + if (enc->pix_fmt != AV_PIX_FMT_NONE) { + snprintf(buf + strlen(buf), buf_size - strlen(buf), + ", %s", + av_get_pix_fmt_name(enc->pix_fmt)); + if (enc->bits_per_raw_sample && + enc->bits_per_raw_sample <= av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth_minus1) + snprintf(buf + strlen(buf), buf_size - strlen(buf), + " (%d bpc)", enc->bits_per_raw_sample); + } + if (enc->width) { + snprintf(buf + strlen(buf), buf_size - strlen(buf), + ", %dx%d", + enc->width, enc->height); + if (enc->sample_aspect_ratio.num) { + av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den, + enc->width * enc->sample_aspect_ratio.num, + enc->height * enc->sample_aspect_ratio.den, + 1024 * 1024); + snprintf(buf + strlen(buf), buf_size - strlen(buf), + " [SAR %d:%d DAR %d:%d]", + enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den, + display_aspect_ratio.num, display_aspect_ratio.den); + } + if (av_log_get_level() >= AV_LOG_DEBUG) { + int g = av_gcd(enc->time_base.num, enc->time_base.den); + snprintf(buf + strlen(buf), buf_size - strlen(buf), + ", %d/%d", + enc->time_base.num / g, enc->time_base.den / g); + } + } + if (encode) { + snprintf(buf + strlen(buf), buf_size - strlen(buf), + ", q=%d-%d", enc->qmin, enc->qmax); + } + break; + case AVMEDIA_TYPE_AUDIO: + if (enc->sample_rate) { + snprintf(buf + strlen(buf), buf_size - strlen(buf), + ", %d Hz", enc->sample_rate); + } + av_strlcat(buf, ", ", buf_size); + av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout); + if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) { + snprintf(buf + strlen(buf), buf_size - strlen(buf), + ", %s", av_get_sample_fmt_name(enc->sample_fmt)); + } + break; + case AVMEDIA_TYPE_DATA: + if (av_log_get_level() >= AV_LOG_DEBUG) { + int g = av_gcd(enc->time_base.num, enc->time_base.den); + if (g) + snprintf(buf + strlen(buf), buf_size - strlen(buf), + ", %d/%d", + enc->time_base.num / g, enc->time_base.den / g); + } + break; + default: + return; + } + if (encode) { + if (enc->flags & CODEC_FLAG_PASS1) + snprintf(buf + strlen(buf), buf_size - strlen(buf), + ", pass 1"); + if (enc->flags & CODEC_FLAG_PASS2) + snprintf(buf + strlen(buf), buf_size - strlen(buf), + ", pass 2"); + } + bitrate = get_bit_rate(enc); + if (bitrate != 0) { + snprintf(buf + strlen(buf), buf_size - strlen(buf), + ", %d kb/s", bitrate / 1000); + } +} + +const char *av_get_profile_name(const AVCodec *codec, int profile) +{ + const AVProfile *p; + if (profile == FF_PROFILE_UNKNOWN || !codec->profiles) + return NULL; + + for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++) + if (p->profile == profile) + return p->name; + + return NULL; +} + +unsigned avcodec_version(void) +{ +// av_assert0(AV_CODEC_ID_V410==164); + av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563); + av_assert0(AV_CODEC_ID_ADPCM_G722==69660); +// av_assert0(AV_CODEC_ID_BMV_AUDIO==86071); + av_assert0(AV_CODEC_ID_SRT==94216); + av_assert0(LIBAVCODEC_VERSION_MICRO >= 100); + + av_assert0(CODEC_ID_CLLC == AV_CODEC_ID_CLLC); + av_assert0(CODEC_ID_PCM_S8_PLANAR == AV_CODEC_ID_PCM_S8_PLANAR); + av_assert0(CODEC_ID_ADPCM_IMA_APC == AV_CODEC_ID_ADPCM_IMA_APC); + av_assert0(CODEC_ID_ILBC == AV_CODEC_ID_ILBC); + av_assert0(CODEC_ID_SRT == AV_CODEC_ID_SRT); + return LIBAVCODEC_VERSION_INT; +} + +const char *avcodec_configuration(void) +{ + return FFMPEG_CONFIGURATION; +} + +const char *avcodec_license(void) +{ +#define LICENSE_PREFIX "libavcodec license: " + return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; +} + +void avcodec_flush_buffers(AVCodecContext *avctx) +{ + if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME) + ff_thread_flush(avctx); + else if (avctx->codec->flush) + avctx->codec->flush(avctx); + + avctx->pts_correction_last_pts = + avctx->pts_correction_last_dts = INT64_MIN; +} + +int av_get_exact_bits_per_sample(enum AVCodecID codec_id) +{ + switch (codec_id) { + case AV_CODEC_ID_8SVX_EXP: + case AV_CODEC_ID_8SVX_FIB: + case AV_CODEC_ID_ADPCM_CT: + case AV_CODEC_ID_ADPCM_IMA_APC: + case AV_CODEC_ID_ADPCM_IMA_EA_SEAD: + case AV_CODEC_ID_ADPCM_IMA_OKI: + case AV_CODEC_ID_ADPCM_IMA_WS: + case AV_CODEC_ID_ADPCM_G722: + case AV_CODEC_ID_ADPCM_YAMAHA: + return 4; + case AV_CODEC_ID_PCM_ALAW: + case AV_CODEC_ID_PCM_MULAW: + case AV_CODEC_ID_PCM_S8: + case AV_CODEC_ID_PCM_S8_PLANAR: + case AV_CODEC_ID_PCM_U8: + case AV_CODEC_ID_PCM_ZORK: + return 8; + case AV_CODEC_ID_PCM_S16BE: + case AV_CODEC_ID_PCM_S16BE_PLANAR: + case AV_CODEC_ID_PCM_S16LE: + case AV_CODEC_ID_PCM_S16LE_PLANAR: + case AV_CODEC_ID_PCM_U16BE: + case AV_CODEC_ID_PCM_U16LE: + return 16; + case AV_CODEC_ID_PCM_S24DAUD: + case AV_CODEC_ID_PCM_S24BE: + case AV_CODEC_ID_PCM_S24LE: + case AV_CODEC_ID_PCM_S24LE_PLANAR: + case AV_CODEC_ID_PCM_U24BE: + case AV_CODEC_ID_PCM_U24LE: + return 24; + case AV_CODEC_ID_PCM_S32BE: + case AV_CODEC_ID_PCM_S32LE: + case AV_CODEC_ID_PCM_S32LE_PLANAR: + case AV_CODEC_ID_PCM_U32BE: + case AV_CODEC_ID_PCM_U32LE: + case AV_CODEC_ID_PCM_F32BE: + case AV_CODEC_ID_PCM_F32LE: + return 32; + case AV_CODEC_ID_PCM_F64BE: + case AV_CODEC_ID_PCM_F64LE: + return 64; + default: + return 0; + } +} + +enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be) +{ + static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = { + [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 }, + [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE }, + [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE }, + [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE }, + [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE }, + [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 }, + [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE }, + [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE }, + [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE }, + [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE }, + }; + if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB) + return AV_CODEC_ID_NONE; + if (be < 0 || be > 1) + be = AV_NE(1, 0); + return map[fmt][be]; +} + +int av_get_bits_per_sample(enum AVCodecID codec_id) +{ + switch (codec_id) { + case AV_CODEC_ID_ADPCM_SBPRO_2: + return 2; + case AV_CODEC_ID_ADPCM_SBPRO_3: + return 3; + case AV_CODEC_ID_ADPCM_SBPRO_4: + case AV_CODEC_ID_ADPCM_IMA_WAV: + case AV_CODEC_ID_ADPCM_IMA_QT: + case AV_CODEC_ID_ADPCM_SWF: + case AV_CODEC_ID_ADPCM_MS: + return 4; + default: + return av_get_exact_bits_per_sample(codec_id); + } +} + +int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes) +{ + int id, sr, ch, ba, tag, bps; + + id = avctx->codec_id; + sr = avctx->sample_rate; + ch = avctx->channels; + ba = avctx->block_align; + tag = avctx->codec_tag; + bps = av_get_exact_bits_per_sample(avctx->codec_id); + + /* codecs with an exact constant bits per sample */ + if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768) + return (frame_bytes * 8LL) / (bps * ch); + bps = avctx->bits_per_coded_sample; + + /* codecs with a fixed packet duration */ + switch (id) { + case AV_CODEC_ID_ADPCM_ADX: return 32; + case AV_CODEC_ID_ADPCM_IMA_QT: return 64; + case AV_CODEC_ID_ADPCM_EA_XAS: return 128; + case AV_CODEC_ID_AMR_NB: + case AV_CODEC_ID_EVRC: + case AV_CODEC_ID_GSM: + case AV_CODEC_ID_QCELP: + case AV_CODEC_ID_RA_288: return 160; + case AV_CODEC_ID_AMR_WB: + case AV_CODEC_ID_GSM_MS: return 320; + case AV_CODEC_ID_MP1: return 384; + case AV_CODEC_ID_ATRAC1: return 512; + case AV_CODEC_ID_ATRAC3: return 1024; + case AV_CODEC_ID_MP2: + case AV_CODEC_ID_MUSEPACK7: return 1152; + case AV_CODEC_ID_AC3: return 1536; + } + + if (sr > 0) { + /* calc from sample rate */ + if (id == AV_CODEC_ID_TTA) + return 256 * sr / 245; + + if (ch > 0) { + /* calc from sample rate and channels */ + if (id == AV_CODEC_ID_BINKAUDIO_DCT) + return (480 << (sr / 22050)) / ch; + } + } + + if (ba > 0) { + /* calc from block_align */ + if (id == AV_CODEC_ID_SIPR) { + switch (ba) { + case 20: return 160; + case 19: return 144; + case 29: return 288; + case 37: return 480; + } + } else if (id == AV_CODEC_ID_ILBC) { + switch (ba) { + case 38: return 160; + case 50: return 240; + } + } + } + + if (frame_bytes > 0) { + /* calc from frame_bytes only */ + if (id == AV_CODEC_ID_TRUESPEECH) + return 240 * (frame_bytes / 32); + if (id == AV_CODEC_ID_NELLYMOSER) + return 256 * (frame_bytes / 64); + if (id == AV_CODEC_ID_RA_144) + return 160 * (frame_bytes / 20); + if (id == AV_CODEC_ID_G723_1) + return 240 * (frame_bytes / 24); + + if (bps > 0) { + /* calc from frame_bytes and bits_per_coded_sample */ + if (id == AV_CODEC_ID_ADPCM_G726) + return frame_bytes * 8 / bps; + } + + if (ch > 0) { + /* calc from frame_bytes and channels */ + switch (id) { + case AV_CODEC_ID_ADPCM_AFC: + return frame_bytes / (9 * ch) * 16; + case AV_CODEC_ID_ADPCM_4XM: + case AV_CODEC_ID_ADPCM_IMA_ISS: + return (frame_bytes - 4 * ch) * 2 / ch; + case AV_CODEC_ID_ADPCM_IMA_SMJPEG: + return (frame_bytes - 4) * 2 / ch; + case AV_CODEC_ID_ADPCM_IMA_AMV: + return (frame_bytes - 8) * 2 / ch; + case AV_CODEC_ID_ADPCM_XA: + return (frame_bytes / 128) * 224 / ch; + case AV_CODEC_ID_INTERPLAY_DPCM: + return (frame_bytes - 6 - ch) / ch; + case AV_CODEC_ID_ROQ_DPCM: + return (frame_bytes - 8) / ch; + case AV_CODEC_ID_XAN_DPCM: + return (frame_bytes - 2 * ch) / ch; + case AV_CODEC_ID_MACE3: + return 3 * frame_bytes / ch; + case AV_CODEC_ID_MACE6: + return 6 * frame_bytes / ch; + case AV_CODEC_ID_PCM_LXF: + return 2 * (frame_bytes / (5 * ch)); + case AV_CODEC_ID_IAC: + case AV_CODEC_ID_IMC: + return 4 * frame_bytes / ch; + } + + if (tag) { + /* calc from frame_bytes, channels, and codec_tag */ + if (id == AV_CODEC_ID_SOL_DPCM) { + if (tag == 3) + return frame_bytes / ch; + else + return frame_bytes * 2 / ch; + } + } + + if (ba > 0) { + /* calc from frame_bytes, channels, and block_align */ + int blocks = frame_bytes / ba; + switch (avctx->codec_id) { + case AV_CODEC_ID_ADPCM_IMA_WAV: + return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8); + case AV_CODEC_ID_ADPCM_IMA_DK3: + return blocks * (((ba - 16) * 2 / 3 * 4) / ch); + case AV_CODEC_ID_ADPCM_IMA_DK4: + return blocks * (1 + (ba - 4 * ch) * 2 / ch); + case AV_CODEC_ID_ADPCM_MS: + return blocks * (2 + (ba - 7 * ch) * 2 / ch); + } + } + + if (bps > 0) { + /* calc from frame_bytes, channels, and bits_per_coded_sample */ + switch (avctx->codec_id) { + case AV_CODEC_ID_PCM_DVD: + if(bps<4) + return 0; + return 2 * (frame_bytes / ((bps * 2 / 8) * ch)); + case AV_CODEC_ID_PCM_BLURAY: + if(bps<4) + return 0; + return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8); + case AV_CODEC_ID_S302M: + return 2 * (frame_bytes / ((bps + 4) / 4)) / ch; + } + } + } + } + + return 0; +} + +#if !HAVE_THREADS +int ff_thread_init(AVCodecContext *s) +{ + return -1; +} + +#endif + +unsigned int av_xiphlacing(unsigned char *s, unsigned int v) +{ + unsigned int n = 0; + + while (v >= 0xff) { + *s++ = 0xff; + v -= 0xff; + n++; + } + *s = v; + n++; + return n; +} + +int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b) +{ + int i; + for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ; + return i; +} + +#if FF_API_MISSING_SAMPLE +void av_log_missing_feature(void *avc, const char *feature, int want_sample) +{ + av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg " + "version to the newest one from Git. If the problem still " + "occurs, it means that your file has a feature which has not " + "been implemented.\n", feature); + if(want_sample) + av_log_ask_for_sample(avc, NULL); +} + +void av_log_ask_for_sample(void *avc, const char *msg, ...) +{ + va_list argument_list; + + va_start(argument_list, msg); + + if (msg) + av_vlog(avc, AV_LOG_WARNING, msg, argument_list); + av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample " + "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ " + "and contact the ffmpeg-devel mailing list.\n"); + + va_end(argument_list); +} +#endif /* FF_API_MISSING_SAMPLE */ + +static AVHWAccel *first_hwaccel = NULL; + +void av_register_hwaccel(AVHWAccel *hwaccel) +{ + AVHWAccel **p = &first_hwaccel; + while (*p) + p = &(*p)->next; + *p = hwaccel; + hwaccel->next = NULL; +} + +AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel) +{ + return hwaccel ? hwaccel->next : first_hwaccel; +} + +AVHWAccel *ff_find_hwaccel(enum AVCodecID codec_id, enum AVPixelFormat pix_fmt) +{ + AVHWAccel *hwaccel = NULL; + + while ((hwaccel = av_hwaccel_next(hwaccel))) + if (hwaccel->id == codec_id + && hwaccel->pix_fmt == pix_fmt) + return hwaccel; + return NULL; +} + +int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op)) +{ + if (ff_lockmgr_cb) { + if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY)) + return -1; + if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY)) + return -1; + } + + ff_lockmgr_cb = cb; + + if (ff_lockmgr_cb) { + if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE)) + return -1; + if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE)) + return -1; + } + return 0; +} + +int ff_lock_avcodec(AVCodecContext *log_ctx) +{ + if (ff_lockmgr_cb) { + if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN)) + return -1; + } + entangled_thread_counter++; + if (entangled_thread_counter != 1) { + av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n"); + ff_avcodec_locked = 1; + ff_unlock_avcodec(); + return AVERROR(EINVAL); + } + av_assert0(!ff_avcodec_locked); + ff_avcodec_locked = 1; + return 0; +} + +int ff_unlock_avcodec(void) +{ + av_assert0(ff_avcodec_locked); + ff_avcodec_locked = 0; + entangled_thread_counter--; + if (ff_lockmgr_cb) { + if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE)) + return -1; + } + return 0; +} + +int avpriv_lock_avformat(void) +{ + if (ff_lockmgr_cb) { + if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN)) + return -1; + } + return 0; +} + +int avpriv_unlock_avformat(void) +{ + if (ff_lockmgr_cb) { + if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE)) + return -1; + } + return 0; +} + +unsigned int avpriv_toupper4(unsigned int x) +{ + return av_toupper(x & 0xFF) + + (av_toupper((x >> 8) & 0xFF) << 8) + + (av_toupper((x >> 16) & 0xFF) << 16) + + (av_toupper((x >> 24) & 0xFF) << 24); +} + +int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src) +{ + int ret; + + dst->owner = src->owner; + + ret = av_frame_ref(dst->f, src->f); + if (ret < 0) + return ret; + + if (src->progress && + !(dst->progress = av_buffer_ref(src->progress))) { + ff_thread_release_buffer(dst->owner, dst); + return AVERROR(ENOMEM); + } + + return 0; +} + +#if !HAVE_THREADS + +int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags) +{ + f->owner = avctx; + return ff_get_buffer(avctx, f->f, flags); +} + +void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f) +{ + av_frame_unref(f->f); +} + +void ff_thread_finish_setup(AVCodecContext *avctx) +{ +} + +void ff_thread_report_progress(ThreadFrame *f, int progress, int field) +{ +} + +void ff_thread_await_progress(ThreadFrame *f, int progress, int field) +{ +} + +int ff_thread_can_start_frame(AVCodecContext *avctx) +{ + return 1; +} + +#endif + +enum AVMediaType avcodec_get_type(enum AVCodecID codec_id) +{ + AVCodec *c= avcodec_find_decoder(codec_id); + if(!c) + c= avcodec_find_encoder(codec_id); + if(c) + return c->type; + + if (codec_id <= AV_CODEC_ID_NONE) + return AVMEDIA_TYPE_UNKNOWN; + else if (codec_id < AV_CODEC_ID_FIRST_AUDIO) + return AVMEDIA_TYPE_VIDEO; + else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE) + return AVMEDIA_TYPE_AUDIO; + else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN) + return AVMEDIA_TYPE_SUBTITLE; + + return AVMEDIA_TYPE_UNKNOWN; +} + +int avcodec_is_open(AVCodecContext *s) +{ + return !!s->internal; +} + +int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf) +{ + int ret; + char *str; + + ret = av_bprint_finalize(buf, &str); + if (ret < 0) + return ret; + avctx->extradata = str; + /* Note: the string is NUL terminated (so extradata can be read as a + * string), but the ending character is not accounted in the size (in + * binary formats you are likely not supposed to mux that character). When + * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE + * zeros. */ + avctx->extradata_size = buf->len; + return 0; +} |