diff options
Diffstat (limited to 'ffmpeg/libavcodec/rawdec.c')
| -rw-r--r-- | ffmpeg/libavcodec/rawdec.c | 361 |
1 files changed, 0 insertions, 361 deletions
diff --git a/ffmpeg/libavcodec/rawdec.c b/ffmpeg/libavcodec/rawdec.c deleted file mode 100644 index e1682e3..0000000 --- a/ffmpeg/libavcodec/rawdec.c +++ /dev/null @@ -1,361 +0,0 @@ -/* - * Raw Video Decoder - * Copyright (c) 2001 Fabrice Bellard - * - * 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 - * Raw Video Decoder - */ - -#include "avcodec.h" -#include "internal.h" -#include "raw.h" -#include "libavutil/avassert.h" -#include "libavutil/buffer.h" -#include "libavutil/common.h" -#include "libavutil/intreadwrite.h" -#include "libavutil/imgutils.h" -#include "libavutil/opt.h" - -typedef struct RawVideoContext { - AVClass *av_class; - AVBufferRef *palette; - int frame_size; /* size of the frame in bytes */ - int flip; - int is_2_4_bpp; // 2 or 4 bpp raw in avi/mov - int is_yuv2; - int tff; -} RawVideoContext; - -static const AVOption options[]={ -{"top", "top field first", offsetof(RawVideoContext, tff), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, AV_OPT_FLAG_DECODING_PARAM|AV_OPT_FLAG_VIDEO_PARAM}, -{NULL} -}; - -static const AVClass rawdec_class = { - .class_name = "rawdec", - .option = options, - .version = LIBAVUTIL_VERSION_INT, -}; - -static const PixelFormatTag pix_fmt_bps_avi[] = { - { AV_PIX_FMT_MONOWHITE, 1 }, - { AV_PIX_FMT_PAL8, 2 }, - { AV_PIX_FMT_PAL8, 4 }, - { AV_PIX_FMT_PAL8, 8 }, - { AV_PIX_FMT_RGB444LE, 12 }, - { AV_PIX_FMT_RGB555LE, 15 }, - { AV_PIX_FMT_RGB555LE, 16 }, - { AV_PIX_FMT_BGR24, 24 }, - { AV_PIX_FMT_BGRA, 32 }, - { AV_PIX_FMT_NONE, 0 }, -}; - -static const PixelFormatTag pix_fmt_bps_mov[] = { - { AV_PIX_FMT_MONOWHITE, 1 }, - { AV_PIX_FMT_PAL8, 2 }, - { AV_PIX_FMT_PAL8, 4 }, - { AV_PIX_FMT_PAL8, 8 }, - // FIXME swscale does not support 16 bit in .mov, sample 16bit.mov - // http://developer.apple.com/documentation/QuickTime/QTFF/QTFFChap3/qtff3.html - { AV_PIX_FMT_RGB555BE, 16 }, - { AV_PIX_FMT_RGB24, 24 }, - { AV_PIX_FMT_ARGB, 32 }, - { AV_PIX_FMT_MONOWHITE,33 }, - { AV_PIX_FMT_NONE, 0 }, -}; - -enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags, - unsigned int fourcc) -{ - while (tags->pix_fmt >= 0) { - if (tags->fourcc == fourcc) - return tags->pix_fmt; - tags++; - } - return AV_PIX_FMT_NONE; -} - -#if LIBAVCODEC_VERSION_MAJOR < 55 -enum AVPixelFormat ff_find_pix_fmt(const PixelFormatTag *tags, unsigned int fourcc) -{ - return avpriv_find_pix_fmt(tags, fourcc); -} -#endif - -static av_cold int raw_init_decoder(AVCodecContext *avctx) -{ - RawVideoContext *context = avctx->priv_data; - const AVPixFmtDescriptor *desc; - - if ( avctx->codec_tag == MKTAG('r','a','w',' ') - || avctx->codec_tag == MKTAG('N','O','1','6')) - avctx->pix_fmt = avpriv_find_pix_fmt(pix_fmt_bps_mov, - avctx->bits_per_coded_sample & 0x1f); - else if (avctx->codec_tag == MKTAG('W', 'R', 'A', 'W')) - avctx->pix_fmt = avpriv_find_pix_fmt(pix_fmt_bps_avi, - avctx->bits_per_coded_sample); - else if (avctx->codec_tag) - avctx->pix_fmt = avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, avctx->codec_tag); - else if (avctx->pix_fmt == AV_PIX_FMT_NONE && avctx->bits_per_coded_sample) - avctx->pix_fmt = avpriv_find_pix_fmt(pix_fmt_bps_avi, - avctx->bits_per_coded_sample); - - desc = av_pix_fmt_desc_get(avctx->pix_fmt); - if (!desc) { - av_log(avctx, AV_LOG_ERROR, "Invalid pixel format.\n"); - return AVERROR(EINVAL); - } - - if (desc->flags & (AV_PIX_FMT_FLAG_PAL | AV_PIX_FMT_FLAG_PSEUDOPAL)) { - context->palette = av_buffer_alloc(AVPALETTE_SIZE); - if (!context->palette) - return AVERROR(ENOMEM); - if (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL) - avpriv_set_systematic_pal2((uint32_t*)context->palette->data, avctx->pix_fmt); - else - memset(context->palette->data, 0, AVPALETTE_SIZE); - } - - if (((avctx->bits_per_coded_sample & 0x1f) == 4 || (avctx->bits_per_coded_sample & 0x1f) == 2) && - avctx->pix_fmt == AV_PIX_FMT_PAL8 && - (!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' '))) { - context->is_2_4_bpp = 1; - context->frame_size = avpicture_get_size(avctx->pix_fmt, - FFALIGN(avctx->width, 16), - avctx->height); - } else { - context->frame_size = avpicture_get_size(avctx->pix_fmt, avctx->width, - avctx->height); - } - - if ((avctx->extradata_size >= 9 && - !memcmp(avctx->extradata + avctx->extradata_size - 9, "BottomUp", 9)) || - avctx->codec_tag == MKTAG('c','y','u','v') || - avctx->codec_tag == MKTAG(3, 0, 0, 0) || - avctx->codec_tag == MKTAG('W','R','A','W')) - context->flip = 1; - - if (avctx->codec_tag == AV_RL32("yuv2") && - avctx->pix_fmt == AV_PIX_FMT_YUYV422) - context->is_yuv2 = 1; - - return 0; -} - -static void flip(AVCodecContext *avctx, AVPicture *picture) -{ - picture->data[0] += picture->linesize[0] * (avctx->height - 1); - picture->linesize[0] *= -1; -} - -static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame, - AVPacket *avpkt) -{ - const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt); - RawVideoContext *context = avctx->priv_data; - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - int linesize_align = 4; - int res, len; - int need_copy = !avpkt->buf || context->is_2_4_bpp || context->is_yuv2; - - AVFrame *frame = data; - AVPicture *picture = data; - - frame->pict_type = AV_PICTURE_TYPE_I; - frame->key_frame = 1; - frame->reordered_opaque = avctx->reordered_opaque; - frame->pkt_pts = avctx->internal->pkt->pts; - av_frame_set_pkt_pos (frame, avctx->internal->pkt->pos); - av_frame_set_pkt_duration(frame, avctx->internal->pkt->duration); - - if (context->tff >= 0) { - frame->interlaced_frame = 1; - frame->top_field_first = context->tff; - } - - if ((res = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0) - return res; - - if (need_copy) - frame->buf[0] = av_buffer_alloc(FFMAX(context->frame_size, buf_size)); - else - frame->buf[0] = av_buffer_ref(avpkt->buf); - if (!frame->buf[0]) - return AVERROR(ENOMEM); - - //2bpp and 4bpp raw in avi and mov (yes this is ugly ...) - if (context->is_2_4_bpp) { - int i; - uint8_t *dst = frame->buf[0]->data; - buf_size = context->frame_size - AVPALETTE_SIZE; - if ((avctx->bits_per_coded_sample & 0x1f) == 4) { - for (i = 0; 2 * i + 1 < buf_size && i<avpkt->size; i++) { - dst[2 * i + 0] = buf[i] >> 4; - dst[2 * i + 1] = buf[i] & 15; - } - linesize_align = 8; - } else { - av_assert0((avctx->bits_per_coded_sample & 0x1f) == 2); - for (i = 0; 4 * i + 3 < buf_size && i<avpkt->size; i++) { - dst[4 * i + 0] = buf[i] >> 6; - dst[4 * i + 1] = buf[i] >> 4 & 3; - dst[4 * i + 2] = buf[i] >> 2 & 3; - dst[4 * i + 3] = buf[i] & 3; - } - linesize_align = 16; - } - buf = dst; - } else if (need_copy) { - memcpy(frame->buf[0]->data, buf, buf_size); - buf = frame->buf[0]->data; - } - - if (avctx->codec_tag == MKTAG('A', 'V', '1', 'x') || - avctx->codec_tag == MKTAG('A', 'V', 'u', 'p')) - buf += buf_size - context->frame_size; - - len = context->frame_size - (avctx->pix_fmt==AV_PIX_FMT_PAL8 ? AVPALETTE_SIZE : 0); - if (buf_size < len) { - av_log(avctx, AV_LOG_ERROR, "Invalid buffer size, packet size %d < expected frame_size %d\n", buf_size, len); - av_buffer_unref(&frame->buf[0]); - return AVERROR(EINVAL); - } - - if ((res = avpicture_fill(picture, buf, avctx->pix_fmt, - avctx->width, avctx->height)) < 0) { - av_buffer_unref(&frame->buf[0]); - return res; - } - - if (avctx->pix_fmt == AV_PIX_FMT_PAL8) { - const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, - NULL); - - if (pal) { - av_buffer_unref(&context->palette); - context->palette = av_buffer_alloc(AVPALETTE_SIZE); - if (!context->palette) { - av_buffer_unref(&frame->buf[0]); - return AVERROR(ENOMEM); - } - memcpy(context->palette->data, pal, AVPALETTE_SIZE); - frame->palette_has_changed = 1; - } - } - - if ((avctx->pix_fmt==AV_PIX_FMT_BGR24 || - avctx->pix_fmt==AV_PIX_FMT_GRAY8 || - avctx->pix_fmt==AV_PIX_FMT_RGB555LE || - avctx->pix_fmt==AV_PIX_FMT_RGB555BE || - avctx->pix_fmt==AV_PIX_FMT_RGB565LE || - avctx->pix_fmt==AV_PIX_FMT_MONOWHITE || - avctx->pix_fmt==AV_PIX_FMT_PAL8) && - FFALIGN(frame->linesize[0], linesize_align) * avctx->height <= buf_size) - frame->linesize[0] = FFALIGN(frame->linesize[0], linesize_align); - - if (avctx->pix_fmt == AV_PIX_FMT_NV12 && avctx->codec_tag == MKTAG('N', 'V', '1', '2') && - FFALIGN(frame->linesize[0], linesize_align) * avctx->height + - FFALIGN(frame->linesize[1], linesize_align) * ((avctx->height + 1) / 2) <= buf_size) { - int la0 = FFALIGN(frame->linesize[0], linesize_align); - frame->data[1] += (la0 - frame->linesize[0]) * avctx->height; - frame->linesize[0] = la0; - frame->linesize[1] = FFALIGN(frame->linesize[1], linesize_align); - } - - if ((avctx->pix_fmt == AV_PIX_FMT_PAL8 && buf_size < context->frame_size) || - (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)) { - frame->buf[1] = av_buffer_ref(context->palette); - if (!frame->buf[1]) { - av_buffer_unref(&frame->buf[0]); - return AVERROR(ENOMEM); - } - frame->data[1] = frame->buf[1]->data; - } - - if (avctx->pix_fmt == AV_PIX_FMT_BGR24 && - ((frame->linesize[0] + 3) & ~3) * avctx->height <= buf_size) - frame->linesize[0] = (frame->linesize[0] + 3) & ~3; - - if (context->flip) - flip(avctx, picture); - - if (avctx->codec_tag == MKTAG('Y', 'V', '1', '2') || - avctx->codec_tag == MKTAG('Y', 'V', '1', '6') || - avctx->codec_tag == MKTAG('Y', 'V', '2', '4') || - avctx->codec_tag == MKTAG('Y', 'V', 'U', '9')) - FFSWAP(uint8_t *, picture->data[1], picture->data[2]); - - if (avctx->codec_tag == AV_RL32("I420") && (avctx->width+1)*(avctx->height+1) * 3/2 == buf_size) { - picture->data[1] = picture->data[1] + (avctx->width+1)*(avctx->height+1) -avctx->width*avctx->height; - picture->data[2] = picture->data[2] + ((avctx->width+1)*(avctx->height+1) -avctx->width*avctx->height)*5/4; - } - - if (avctx->codec_tag == AV_RL32("yuv2") && - avctx->pix_fmt == AV_PIX_FMT_YUYV422) { - int x, y; - uint8_t *line = picture->data[0]; - for (y = 0; y < avctx->height; y++) { - for (x = 0; x < avctx->width; x++) - line[2 * x + 1] ^= 0x80; - line += picture->linesize[0]; - } - } - if (avctx->codec_tag == AV_RL32("YVYU") && - avctx->pix_fmt == AV_PIX_FMT_YUYV422) { - int x, y; - uint8_t *line = picture->data[0]; - for(y = 0; y < avctx->height; y++) { - for(x = 0; x < avctx->width - 1; x += 2) - FFSWAP(uint8_t, line[2*x + 1], line[2*x + 3]); - line += picture->linesize[0]; - } - } - - if (avctx->field_order > AV_FIELD_PROGRESSIVE) { /* we have interlaced material flagged in container */ - frame->interlaced_frame = 1; - if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB) - frame->top_field_first = 1; - } - - *got_frame = 1; - return buf_size; -} - -static av_cold int raw_close_decoder(AVCodecContext *avctx) -{ - RawVideoContext *context = avctx->priv_data; - - av_buffer_unref(&context->palette); - return 0; -} - -AVCodec ff_rawvideo_decoder = { - .name = "rawvideo", - .long_name = NULL_IF_CONFIG_SMALL("raw video"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_RAWVIDEO, - .priv_data_size = sizeof(RawVideoContext), - .init = raw_init_decoder, - .close = raw_close_decoder, - .decode = raw_decode, - .priv_class = &rawdec_class, -}; |