X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Flibvorbis.c;h=86c1ed6a75a5360703480ace0627f202af15469e;hb=081961f819c0b16c7a860d7da7d39f1fd91bd2f0;hp=11d9a28636fb7ef66e0831dc987c4e915287ab28;hpb=fb0a835ff4704965b029dbce3d0e2edf79e0063a;p=ffmpeg diff --git a/libavcodec/libvorbis.c b/libavcodec/libvorbis.c index 11d9a28636f..86c1ed6a75a 100644 --- a/libavcodec/libvorbis.c +++ b/libavcodec/libvorbis.c @@ -1,112 +1,218 @@ /* * copyright (c) 2002 Mark Hills * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav 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, + * Libav 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 + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** - * @file libavcodec/libvorbis.c - * Ogg Vorbis codec support via libvorbisenc. + * @file + * Vorbis encoding support via libvorbisenc. * @author Mark Hills */ #include +#include "libavutil/fifo.h" +#include "libavutil/opt.h" #include "avcodec.h" +#include "audio_frame_queue.h" #include "bytestream.h" +#include "internal.h" +#include "vorbis.h" +#include "vorbis_parser.h" #undef NDEBUG #include -#define OGGVORBIS_FRAME_SIZE 64 +/* 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 LIBVORBIS_FRAME_SIZE 64 + +#define BUFFER_SIZE (1024 * 64) + +typedef struct LibvorbisContext { + AVClass *av_class; /**< class for AVOptions */ + 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 */ + ogg_packet op; /**< ogg packet */ + double iblock; /**< impulse block bias option */ + AVVorbisParseContext *vp; /**< parse context to get durations */ + AudioFrameQueue afq; /**< frame queue for timestamps */ +} LibvorbisContext; + +static const AVOption options[] = { + { "iblock", "Sets the impulse block bias", offsetof(LibvorbisContext, 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 = { "libvorbis", av_default_item_name, options, 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; + } +} -#define BUFFER_SIZE (1024*64) +static av_cold int libvorbis_setup(vorbis_info *vi, AVCodecContext *avctx) +{ + LibvorbisContext *s = avctx->priv_data; + double cfreq; + int ret; + + if (avctx->flags & AV_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 & AV_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; + } -typedef struct OggVorbisContext { - vorbis_info vi ; - vorbis_dsp_state vd ; - vorbis_block vb ; - uint8_t buffer[BUFFER_SIZE]; - int buffer_index; - int eof; + /* cutoff frequency */ + if (avctx->cutoff > 0) { + cfreq = avctx->cutoff / 1000.0; + if ((ret = vorbis_encode_ctl(vi, OV_ECTL_LOWPASS_SET, &cfreq))) + goto error; + } - /* decoder */ - vorbis_comment vc ; - ogg_packet op; -} OggVorbisContext ; + /* impulse block bias */ + if (s->iblock) { + if ((ret = vorbis_encode_ctl(vi, OV_ECTL_IBLOCK_SET, &s->iblock))) + goto error; + } + if ((ret = vorbis_encode_setup_init(vi))) + goto error; -static av_cold int oggvorbis_init_encoder(vorbis_info *vi, AVCodecContext *avccontext) { - double cfreq; + return 0; +error: + return vorbis_error_to_averror(ret); +} - if(avccontext->flags & CODEC_FLAG_QSCALE) { - /* variable bitrate */ - if(vorbis_encode_setup_vbr(vi, avccontext->channels, - avccontext->sample_rate, - avccontext->global_quality / (float)FF_QP2LAMBDA / 10.0)) - return -1; - } else { - /* constant bitrate */ - if(vorbis_encode_setup_managed(vi, avccontext->channels, - avccontext->sample_rate, -1, avccontext->bit_rate, -1)) - return -1; +/* How many bytes are needed for a buffer of length 'l' */ +static int xiph_len(int l) +{ + return 1 + l / 255 + l; +} -#ifdef OGGVORBIS_VBR_BY_ESTIMATE - /* variable bitrate by estimate */ - if(vorbis_encode_ctl(vi, OV_ECTL_RATEMANAGE_AVG, NULL)) - return -1; -#endif - } +static av_cold int libvorbis_encode_close(AVCodecContext *avctx) +{ + LibvorbisContext *s = avctx->priv_data; - /* cutoff frequency */ - if(avccontext->cutoff > 0) { - cfreq = avccontext->cutoff / 1000.0; - if(vorbis_encode_ctl(vi, OV_ECTL_LOWPASS_SET, &cfreq)) - return -1; - } + /* 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 vorbis_encode_setup_init(vi); + av_vorbis_parse_free(&s->vp); + + return 0; } -static av_cold int oggvorbis_encode_init(AVCodecContext *avccontext) { - OggVorbisContext *context = avccontext->priv_data ; +static av_cold int libvorbis_encode_init(AVCodecContext *avctx) +{ + LibvorbisContext *s = avctx->priv_data; ogg_packet header, header_comm, header_code; uint8_t *p; - unsigned int offset, len; + unsigned int offset; + int ret; - vorbis_info_init(&context->vi) ; - if(oggvorbis_init_encoder(&context->vi, avccontext) < 0) { - av_log(avccontext, AV_LOG_ERROR, "oggvorbis_encode_init: init_encoder failed\n") ; - return -1 ; + vorbis_info_init(&s->vi); + if ((ret = libvorbis_setup(&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_analysis_init(&context->vd, &context->vi) ; - vorbis_block_init(&context->vd, &context->vb) ; - vorbis_comment_init(&context->vc); - vorbis_comment_add_tag(&context->vc, "encoder", LIBAVCODEC_IDENT) ; + vorbis_comment_init(&s->vc); + vorbis_comment_add_tag(&s->vc, "encoder", LIBAVCODEC_IDENT); - vorbis_analysis_headerout(&context->vd, &context->vc, &header, - &header_comm, &header_code); + if ((ret = vorbis_analysis_headerout(&s->vd, &s->vc, &header, &header_comm, + &header_code))) { + ret = vorbis_error_to_averror(ret); + goto error; + } - len = header.bytes + header_comm.bytes + header_code.bytes; - avccontext->extradata_size= 64 + len + len/255; - p = avccontext->extradata= av_mallocz(avccontext->extradata_size); - p[0] = 2; - offset = 1; + avctx->extradata_size = 1 + xiph_len(header.bytes) + + xiph_len(header_comm.bytes) + + header_code.bytes; + p = avctx->extradata = av_malloc(avctx->extradata_size + + AV_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); @@ -115,115 +221,134 @@ static av_cold int oggvorbis_encode_init(AVCodecContext *avccontext) { offset += header_comm.bytes; memcpy(&p[offset], header_code.packet, header_code.bytes); offset += header_code.bytes; - avccontext->extradata_size = offset; - avccontext->extradata= av_realloc(avccontext->extradata, avccontext->extradata_size); + assert(offset == avctx->extradata_size); -/* vorbis_block_clear(&context->vb); - vorbis_dsp_clear(&context->vd); - vorbis_info_clear(&context->vi);*/ - vorbis_comment_clear(&context->vc); + s->vp = av_vorbis_parse_init(avctx->extradata, avctx->extradata_size); + if (!s->vp) { + av_log(avctx, AV_LOG_ERROR, "invalid extradata\n"); + return ret; + } - avccontext->frame_size = OGGVORBIS_FRAME_SIZE ; + vorbis_comment_clear(&s->vc); - avccontext->coded_frame= avcodec_alloc_frame(); - avccontext->coded_frame->key_frame= 1; + avctx->frame_size = LIBVORBIS_FRAME_SIZE; + ff_af_queue_init(avctx, &s->afq); - return 0 ; -} + s->pkt_fifo = av_fifo_alloc(BUFFER_SIZE); + if (!s->pkt_fifo) { + ret = AVERROR(ENOMEM); + goto error; + } + return 0; +error: + libvorbis_encode_close(avctx); + return ret; +} -static int oggvorbis_encode_frame(AVCodecContext *avccontext, - unsigned char *packets, - int buf_size, void *data) +static int libvorbis_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, + const AVFrame *frame, int *got_packet_ptr) { - OggVorbisContext *context = avccontext->priv_data ; - ogg_packet op ; - signed short *audio = data ; - int l; - - if(data) { - int samples = OGGVORBIS_FRAME_SIZE; - float **buffer ; - - buffer = vorbis_analysis_buffer(&context->vd, samples) ; - if(context->vi.channels == 1) { - for(l = 0 ; l < samples ; l++) - buffer[0][l]=audio[l]/32768.f; - } else { - for(l = 0 ; l < samples ; l++){ - buffer[0][l]=audio[l*2]/32768.f; - buffer[1][l]=audio[l*2+1]/32768.f; - } + LibvorbisContext *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])); } - vorbis_analysis_wrote(&context->vd, samples) ; - } else { - if(!context->eof) - vorbis_analysis_wrote(&context->vd, 0) ; - context->eof = 1; - } - - while(vorbis_analysis_blockout(&context->vd, &context->vb) == 1) { - vorbis_analysis(&context->vb, NULL); - vorbis_bitrate_addblock(&context->vb) ; - - while(vorbis_bitrate_flushpacket(&context->vd, &op)) { - /* i'd love to say the following line is a hack, but sadly it's - * not, apparently the end of stream decision is in libogg. */ - if(op.bytes==1) - continue; - memcpy(context->buffer + context->buffer_index, &op, sizeof(ogg_packet)); - context->buffer_index += sizeof(ogg_packet); - memcpy(context->buffer + context->buffer_index, op.packet, op.bytes); - context->buffer_index += op.bytes; -// av_log(avccontext, AV_LOG_DEBUG, "e%d / %d\n", context->buffer_index, op.bytes); + 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; } - l=0; - if(context->buffer_index){ - ogg_packet *op2= (ogg_packet*)context->buffer; - op2->packet = context->buffer + sizeof(ogg_packet); - - l= op2->bytes; - avccontext->coded_frame->pts= av_rescale_q(op2->granulepos, (AVRational){1, avccontext->sample_rate}, avccontext->time_base); - //FIXME we should reorder the user supplied pts and not assume that they are spaced by 1/sample_rate - - memcpy(packets, op2->packet, l); - context->buffer_index -= l + sizeof(ogg_packet); - memcpy(context->buffer, context->buffer + l + sizeof(ogg_packet), context->buffer_index); -// av_log(avccontext, AV_LOG_DEBUG, "E%d\n", l); + /* 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"); + 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); } - return l; -} - - -static av_cold int oggvorbis_encode_close(AVCodecContext *avccontext) { - OggVorbisContext *context = avccontext->priv_data ; -/* ogg_packet op ; */ - - vorbis_analysis_wrote(&context->vd, 0) ; /* notify vorbisenc this is EOF */ + /* check for available packets */ + if (av_fifo_size(s->pkt_fifo) < sizeof(ogg_packet)) + return 0; - vorbis_block_clear(&context->vb); - vorbis_dsp_clear(&context->vd); - vorbis_info_clear(&context->vi); + av_fifo_generic_read(s->pkt_fifo, &op, sizeof(ogg_packet), NULL); - av_freep(&avccontext->coded_frame); - av_freep(&avccontext->extradata); + if ((ret = ff_alloc_packet(avpkt, op.bytes))) { + av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n"); + 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 = av_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->initial_padding) { + avctx->initial_padding = duration; + s->afq.remaining_delay += duration; + s->afq.remaining_samples += duration; + } + ff_af_queue_remove(&s->afq, duration, &avpkt->pts, &avpkt->duration); + } - return 0 ; + *got_packet_ptr = 1; + return 0; } - -AVCodec libvorbis_encoder = { - "libvorbis", - CODEC_TYPE_AUDIO, - CODEC_ID_VORBIS, - sizeof(OggVorbisContext), - oggvorbis_encode_init, - oggvorbis_encode_frame, - oggvorbis_encode_close, - .capabilities= CODEC_CAP_DELAY, - .sample_fmts = (enum SampleFormat[]){SAMPLE_FMT_S16,SAMPLE_FMT_NONE}, - .long_name= NULL_IF_CONFIG_SMALL("libvorbis Vorbis"), -} ; +AVCodec ff_libvorbis_encoder = { + .name = "libvorbis", + .long_name = NULL_IF_CONFIG_SMALL("libvorbis Vorbis"), + .type = AVMEDIA_TYPE_AUDIO, + .id = AV_CODEC_ID_VORBIS, + .priv_data_size = sizeof(LibvorbisContext), + .init = libvorbis_encode_init, + .encode2 = libvorbis_encode_frame, + .close = libvorbis_encode_close, + .capabilities = AV_CODEC_CAP_DELAY, + .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP, + AV_SAMPLE_FMT_NONE }, + .priv_class = &class, + .defaults = defaults, +};