diff options
Diffstat (limited to 'ffmpeg1/libavcodec/libvorbisenc.c')
| -rw-r--r-- | ffmpeg1/libavcodec/libvorbisenc.c | 378 |
1 files changed, 0 insertions, 378 deletions
diff --git a/ffmpeg1/libavcodec/libvorbisenc.c b/ffmpeg1/libavcodec/libvorbisenc.c deleted file mode 100644 index d3f86cc..0000000 --- a/ffmpeg1/libavcodec/libvorbisenc.c +++ /dev/null @@ -1,378 +0,0 @@ -/* - * Copyright (c) 2002 Mark Hills <mark@pogo.org.uk> - * - * 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 - */ - -#include <vorbis/vorbisenc.h> - -#include "libavutil/avassert.h" -#include "libavutil/fifo.h" -#include "libavutil/opt.h" -#include "avcodec.h" -#include "audio_frame_queue.h" -#include "internal.h" -#include "vorbis.h" -#include "vorbis_parser.h" - - -/* Number of samples the user should send in each call. - * This value is used because it is the LCD of all possible frame sizes, so - * an output packet will always start at the same point as one of the input - * packets. - */ -#define OGGVORBIS_FRAME_SIZE 64 - -#define BUFFER_SIZE (1024 * 64) - -typedef struct OggVorbisEncContext { - AVClass *av_class; /**< class for AVOptions */ - AVFrame frame; - vorbis_info vi; /**< vorbis_info used during init */ - vorbis_dsp_state vd; /**< DSP state used for analysis */ - vorbis_block vb; /**< vorbis_block used for analysis */ - AVFifoBuffer *pkt_fifo; /**< output packet buffer */ - int eof; /**< end-of-file flag */ - int dsp_initialized; /**< vd has been initialized */ - vorbis_comment vc; /**< VorbisComment info */ - double iblock; /**< impulse block bias option */ - VorbisParseContext vp; /**< parse context to get durations */ - AudioFrameQueue afq; /**< frame queue for timestamps */ -} OggVorbisEncContext; - -static const AVOption options[] = { - { "iblock", "Sets the impulse block bias", offsetof(OggVorbisEncContext, iblock), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, -15, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, - { NULL } -}; - -static const AVCodecDefault defaults[] = { - { "b", "0" }, - { NULL }, -}; - -static const AVClass class = { - .class_name = "libvorbis", - .item_name = av_default_item_name, - .option = options, - .version = LIBAVUTIL_VERSION_INT, -}; - -static int vorbis_error_to_averror(int ov_err) -{ - switch (ov_err) { - case OV_EFAULT: return AVERROR_BUG; - case OV_EINVAL: return AVERROR(EINVAL); - case OV_EIMPL: return AVERROR(EINVAL); - default: return AVERROR_UNKNOWN; - } -} - -static av_cold int oggvorbis_init_encoder(vorbis_info *vi, - AVCodecContext *avctx) -{ - OggVorbisEncContext *s = avctx->priv_data; - double cfreq; - int ret; - - if (avctx->flags & CODEC_FLAG_QSCALE || !avctx->bit_rate) { - /* variable bitrate - * NOTE: we use the oggenc range of -1 to 10 for global_quality for - * user convenience, but libvorbis uses -0.1 to 1.0. - */ - float q = avctx->global_quality / (float)FF_QP2LAMBDA; - /* default to 3 if the user did not set quality or bitrate */ - if (!(avctx->flags & CODEC_FLAG_QSCALE)) - q = 3.0; - if ((ret = vorbis_encode_setup_vbr(vi, avctx->channels, - avctx->sample_rate, - q / 10.0))) - goto error; - } else { - int minrate = avctx->rc_min_rate > 0 ? avctx->rc_min_rate : -1; - int maxrate = avctx->rc_max_rate > 0 ? avctx->rc_max_rate : -1; - - /* average bitrate */ - if ((ret = vorbis_encode_setup_managed(vi, avctx->channels, - avctx->sample_rate, maxrate, - avctx->bit_rate, minrate))) - goto error; - - /* variable bitrate by estimate, disable slow rate management */ - if (minrate == -1 && maxrate == -1) - if ((ret = vorbis_encode_ctl(vi, OV_ECTL_RATEMANAGE2_SET, NULL))) - goto error; /* should not happen */ - } - - /* cutoff frequency */ - if (avctx->cutoff > 0) { - cfreq = avctx->cutoff / 1000.0; - if ((ret = vorbis_encode_ctl(vi, OV_ECTL_LOWPASS_SET, &cfreq))) - goto error; /* should not happen */ - } - - /* impulse block bias */ - if (s->iblock) { - if ((ret = vorbis_encode_ctl(vi, OV_ECTL_IBLOCK_SET, &s->iblock))) - goto error; - } - - if (avctx->channels == 3 && - avctx->channel_layout != (AV_CH_LAYOUT_STEREO|AV_CH_FRONT_CENTER) || - avctx->channels == 4 && - avctx->channel_layout != AV_CH_LAYOUT_2_2 && - avctx->channel_layout != AV_CH_LAYOUT_QUAD || - avctx->channels == 5 && - avctx->channel_layout != AV_CH_LAYOUT_5POINT0 && - avctx->channel_layout != AV_CH_LAYOUT_5POINT0_BACK || - avctx->channels == 6 && - avctx->channel_layout != AV_CH_LAYOUT_5POINT1 && - avctx->channel_layout != AV_CH_LAYOUT_5POINT1_BACK || - avctx->channels == 7 && - avctx->channel_layout != (AV_CH_LAYOUT_5POINT1|AV_CH_BACK_CENTER) || - avctx->channels == 8 && - avctx->channel_layout != AV_CH_LAYOUT_7POINT1) { - if (avctx->channel_layout) { - char name[32]; - av_get_channel_layout_string(name, sizeof(name), avctx->channels, - avctx->channel_layout); - av_log(avctx, AV_LOG_ERROR, "%s not supported by Vorbis: " - "output stream will have incorrect " - "channel layout.\n", name); - } else { - av_log(avctx, AV_LOG_WARNING, "No channel layout specified. The encoder " - "will use Vorbis channel layout for " - "%d channels.\n", avctx->channels); - } - } - - if ((ret = vorbis_encode_setup_init(vi))) - goto error; - - return 0; -error: - return vorbis_error_to_averror(ret); -} - -/* How many bytes are needed for a buffer of length 'l' */ -static int xiph_len(int l) -{ - return 1 + l / 255 + l; -} - -static av_cold int oggvorbis_encode_close(AVCodecContext *avctx) -{ - OggVorbisEncContext *s = avctx->priv_data; - - /* notify vorbisenc this is EOF */ - if (s->dsp_initialized) - vorbis_analysis_wrote(&s->vd, 0); - - vorbis_block_clear(&s->vb); - vorbis_dsp_clear(&s->vd); - vorbis_info_clear(&s->vi); - - av_fifo_free(s->pkt_fifo); - ff_af_queue_close(&s->afq); - av_freep(&avctx->extradata); - - return 0; -} - -static av_cold int oggvorbis_encode_init(AVCodecContext *avctx) -{ - OggVorbisEncContext *s = avctx->priv_data; - ogg_packet header, header_comm, header_code; - uint8_t *p; - unsigned int offset; - int ret; - - vorbis_info_init(&s->vi); - if ((ret = oggvorbis_init_encoder(&s->vi, avctx))) { - av_log(avctx, AV_LOG_ERROR, "encoder setup failed\n"); - goto error; - } - if ((ret = vorbis_analysis_init(&s->vd, &s->vi))) { - av_log(avctx, AV_LOG_ERROR, "analysis init failed\n"); - ret = vorbis_error_to_averror(ret); - goto error; - } - s->dsp_initialized = 1; - if ((ret = vorbis_block_init(&s->vd, &s->vb))) { - av_log(avctx, AV_LOG_ERROR, "dsp init failed\n"); - ret = vorbis_error_to_averror(ret); - goto error; - } - - vorbis_comment_init(&s->vc); - if (!(avctx->flags & CODEC_FLAG_BITEXACT)) - vorbis_comment_add_tag(&s->vc, "encoder", LIBAVCODEC_IDENT); - - if ((ret = vorbis_analysis_headerout(&s->vd, &s->vc, &header, &header_comm, - &header_code))) { - ret = vorbis_error_to_averror(ret); - goto error; - } - - avctx->extradata_size = 1 + xiph_len(header.bytes) + - xiph_len(header_comm.bytes) + - header_code.bytes; - p = avctx->extradata = av_malloc(avctx->extradata_size + - FF_INPUT_BUFFER_PADDING_SIZE); - if (!p) { - ret = AVERROR(ENOMEM); - goto error; - } - p[0] = 2; - offset = 1; - offset += av_xiphlacing(&p[offset], header.bytes); - offset += av_xiphlacing(&p[offset], header_comm.bytes); - memcpy(&p[offset], header.packet, header.bytes); - offset += header.bytes; - memcpy(&p[offset], header_comm.packet, header_comm.bytes); - offset += header_comm.bytes; - memcpy(&p[offset], header_code.packet, header_code.bytes); - offset += header_code.bytes; - av_assert0(offset == avctx->extradata_size); - - if ((ret = avpriv_vorbis_parse_extradata(avctx, &s->vp)) < 0) { - av_log(avctx, AV_LOG_ERROR, "invalid extradata\n"); - return ret; - } - - vorbis_comment_clear(&s->vc); - - avctx->frame_size = OGGVORBIS_FRAME_SIZE; - ff_af_queue_init(avctx, &s->afq); - - s->pkt_fifo = av_fifo_alloc(BUFFER_SIZE); - if (!s->pkt_fifo) { - ret = AVERROR(ENOMEM); - goto error; - } - - return 0; -error: - oggvorbis_encode_close(avctx); - return ret; -} - -static int oggvorbis_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, - const AVFrame *frame, int *got_packet_ptr) -{ - OggVorbisEncContext *s = avctx->priv_data; - ogg_packet op; - int ret, duration; - - /* send samples to libvorbis */ - if (frame) { - const int samples = frame->nb_samples; - float **buffer; - int c, channels = s->vi.channels; - - buffer = vorbis_analysis_buffer(&s->vd, samples); - for (c = 0; c < channels; c++) { - int co = (channels > 8) ? c : - ff_vorbis_encoding_channel_layout_offsets[channels - 1][c]; - memcpy(buffer[c], frame->extended_data[co], - samples * sizeof(*buffer[c])); - } - if ((ret = vorbis_analysis_wrote(&s->vd, samples)) < 0) { - av_log(avctx, AV_LOG_ERROR, "error in vorbis_analysis_wrote()\n"); - return vorbis_error_to_averror(ret); - } - if ((ret = ff_af_queue_add(&s->afq, frame)) < 0) - return ret; - } else { - if (!s->eof) - if ((ret = vorbis_analysis_wrote(&s->vd, 0)) < 0) { - av_log(avctx, AV_LOG_ERROR, "error in vorbis_analysis_wrote()\n"); - return vorbis_error_to_averror(ret); - } - s->eof = 1; - } - - /* retrieve available packets from libvorbis */ - while ((ret = vorbis_analysis_blockout(&s->vd, &s->vb)) == 1) { - if ((ret = vorbis_analysis(&s->vb, NULL)) < 0) - break; - if ((ret = vorbis_bitrate_addblock(&s->vb)) < 0) - break; - - /* add any available packets to the output packet buffer */ - while ((ret = vorbis_bitrate_flushpacket(&s->vd, &op)) == 1) { - if (av_fifo_space(s->pkt_fifo) < sizeof(ogg_packet) + op.bytes) { - av_log(avctx, AV_LOG_ERROR, "packet buffer is too small\n"); - return AVERROR_BUG; - } - av_fifo_generic_write(s->pkt_fifo, &op, sizeof(ogg_packet), NULL); - av_fifo_generic_write(s->pkt_fifo, op.packet, op.bytes, NULL); - } - if (ret < 0) { - av_log(avctx, AV_LOG_ERROR, "error getting available packets\n"); - break; - } - } - if (ret < 0) { - av_log(avctx, AV_LOG_ERROR, "error getting available packets\n"); - return vorbis_error_to_averror(ret); - } - - /* check for available packets */ - if (av_fifo_size(s->pkt_fifo) < sizeof(ogg_packet)) - return 0; - - av_fifo_generic_read(s->pkt_fifo, &op, sizeof(ogg_packet), NULL); - - if ((ret = ff_alloc_packet2(avctx, avpkt, op.bytes)) < 0) - return ret; - av_fifo_generic_read(s->pkt_fifo, avpkt->data, op.bytes, NULL); - - avpkt->pts = ff_samples_to_time_base(avctx, op.granulepos); - - duration = avpriv_vorbis_parse_frame(&s->vp, avpkt->data, avpkt->size); - if (duration > 0) { - /* we do not know encoder delay until we get the first packet from - * libvorbis, so we have to update the AudioFrameQueue counts */ - if (!avctx->delay && s->afq.frames) { - avctx->delay = duration; - av_assert0(!s->afq.remaining_delay); - s->afq.frames->duration += duration; - s->afq.frames->pts -= duration; - s->afq.remaining_samples += duration; - } - ff_af_queue_remove(&s->afq, duration, &avpkt->pts, &avpkt->duration); - } - - *got_packet_ptr = 1; - return 0; -} - -AVCodec ff_libvorbis_encoder = { - .name = "libvorbis", - .type = AVMEDIA_TYPE_AUDIO, - .id = AV_CODEC_ID_VORBIS, - .priv_data_size = sizeof(OggVorbisEncContext), - .init = oggvorbis_encode_init, - .encode2 = oggvorbis_encode_frame, - .close = oggvorbis_encode_close, - .capabilities = CODEC_CAP_DELAY, - .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP, - AV_SAMPLE_FMT_NONE }, - .long_name = NULL_IF_CONFIG_SMALL("libvorbis"), - .priv_class = &class, - .defaults = defaults, -}; |