diff options
author | Paul B Mahol <onemda@gmail.com> | 2012-06-12 21:37:58 +0000 |
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committer | Paul B Mahol <onemda@gmail.com> | 2012-06-12 22:12:26 +0000 |
commit | c1d62489e1c2823d52baa74f4c0e9d933c23bfbb (patch) | |
tree | 0c07ad8155675d41ada7cf2032bee57556274f47 /libavcodec/libvorbis.c | |
parent | 2942431a0f94ecb77744a772c164ab71711ffe19 (diff) |
libvorbis: split encoder from decoder
Also fix build dependencies while here.
Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Paul B Mahol <onemda@gmail.com>
Diffstat (limited to 'libavcodec/libvorbis.c')
-rw-r--r-- | libavcodec/libvorbis.c | 560 |
1 files changed, 0 insertions, 560 deletions
diff --git a/libavcodec/libvorbis.c b/libavcodec/libvorbis.c deleted file mode 100644 index 1324e49e87..0000000000 --- a/libavcodec/libvorbis.c +++ /dev/null @@ -1,560 +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 - */ - -/** - * @file - * Vorbis encoding support via libvorbisenc. - * @author Mark Hills <mark@pogo.org.uk> - */ - -#include <vorbis/vorbisenc.h> - -#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 <assert.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 OggVorbisContext { - 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 */ - ogg_packet op; /**< ogg packet */ - double iblock; /**< impulse block bias option */ - VorbisParseContext vp; /**< parse context to get durations */ - AudioFrameQueue afq; /**< frame queue for timestamps */ -} OggVorbisContext; - -static const AVOption options[] = { - { "iblock", "Sets the impulse block bias", offsetof(OggVorbisContext, 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; - } -} - -static av_cold int oggvorbis_init_encoder(vorbis_info *vi, - AVCodecContext *avctx) -{ - OggVorbisContext *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) -{ - OggVorbisContext *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); -#if FF_API_OLD_ENCODE_AUDIO - av_freep(&avctx->coded_frame); -#endif - av_freep(&avctx->extradata); - - return 0; -} - -static av_cold int oggvorbis_encode_init(AVCodecContext *avctx) -{ - OggVorbisContext *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; - assert(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; - } - -#if FF_API_OLD_ENCODE_AUDIO - avctx->coded_frame = avcodec_alloc_frame(); - if (!avctx->coded_frame) { - ret = AVERROR(ENOMEM); - goto error; - } -#endif - - 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) -{ - OggVorbisContext *s = avctx->priv_data; - ogg_packet op; - int ret, duration; - - /* send samples to libvorbis */ - if (frame) { - const float *audio = (const float *)frame->data[0]; - 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 i; - int co = (channels > 8) ? c : - ff_vorbis_encoding_channel_layout_offsets[channels - 1][c]; - for (i = 0; i < samples; i++) - buffer[c][i] = audio[i * channels + co]; - } - 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))) - 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) { - avctx->delay = duration; - s->afq.remaining_delay += 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 = CODEC_ID_VORBIS, - .priv_data_size = sizeof(OggVorbisContext), - .init = oggvorbis_encode_init, - .encode2 = oggvorbis_encode_frame, - .close = oggvorbis_encode_close, - .capabilities = CODEC_CAP_DELAY, - .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLT, - AV_SAMPLE_FMT_NONE }, - .long_name = NULL_IF_CONFIG_SMALL("libvorbis Vorbis"), - .priv_class = &class, - .defaults = defaults, -}; - -static int oggvorbis_decode_init(AVCodecContext *avccontext) { - OggVorbisContext *context = avccontext->priv_data ; - uint8_t *p= avccontext->extradata; - int i, hsizes[3]; - unsigned char *headers[3], *extradata = avccontext->extradata; - - vorbis_info_init(&context->vi) ; - vorbis_comment_init(&context->vc) ; - - if(! avccontext->extradata_size || ! p) { - av_log(avccontext, AV_LOG_ERROR, "vorbis extradata absent\n"); - return -1; - } - - if(p[0] == 0 && p[1] == 30) { - for(i = 0; i < 3; i++){ - hsizes[i] = bytestream_get_be16(&p); - headers[i] = p; - p += hsizes[i]; - } - } else if(*p == 2) { - unsigned int offset = 1; - p++; - for(i=0; i<2; i++) { - hsizes[i] = 0; - while((*p == 0xFF) && (offset < avccontext->extradata_size)) { - hsizes[i] += 0xFF; - offset++; - p++; - } - if(offset >= avccontext->extradata_size - 1) { - av_log(avccontext, AV_LOG_ERROR, - "vorbis header sizes damaged\n"); - return -1; - } - hsizes[i] += *p; - offset++; - p++; - } - hsizes[2] = avccontext->extradata_size - hsizes[0]-hsizes[1]-offset; -#if 0 - av_log(avccontext, AV_LOG_DEBUG, - "vorbis header sizes: %d, %d, %d, / extradata_len is %d \n", - hsizes[0], hsizes[1], hsizes[2], avccontext->extradata_size); -#endif - headers[0] = extradata + offset; - headers[1] = extradata + offset + hsizes[0]; - headers[2] = extradata + offset + hsizes[0] + hsizes[1]; - } else { - av_log(avccontext, AV_LOG_ERROR, - "vorbis initial header len is wrong: %d\n", *p); - return -1; - } - - for(i=0; i<3; i++){ - context->op.b_o_s= i==0; - context->op.bytes = hsizes[i]; - context->op.packet = headers[i]; - if(vorbis_synthesis_headerin(&context->vi, &context->vc, &context->op)<0){ - av_log(avccontext, AV_LOG_ERROR, "%d. vorbis header damaged\n", i+1); - return -1; - } - } - - avccontext->channels = context->vi.channels; - avccontext->sample_rate = context->vi.rate; - avccontext->time_base= (AVRational){1, avccontext->sample_rate}; - - vorbis_synthesis_init(&context->vd, &context->vi); - vorbis_block_init(&context->vd, &context->vb); - - return 0 ; -} - - -static inline int conv(int samples, float **pcm, char *buf, int channels) { - int i, j; - ogg_int16_t *ptr, *data = (ogg_int16_t*)buf ; - float *mono ; - - for(i = 0 ; i < channels ; i++){ - ptr = &data[i]; - mono = pcm[i] ; - - for(j = 0 ; j < samples ; j++) { - *ptr = av_clip_int16(mono[j] * 32767.f); - ptr += channels; - } - } - - return 0 ; -} - -static int oggvorbis_decode_frame(AVCodecContext *avccontext, void *data, - int *got_frame_ptr, AVPacket *avpkt) -{ - OggVorbisContext *context = avccontext->priv_data ; - float **pcm ; - ogg_packet *op= &context->op; - int samples, total_samples, total_bytes; - int ret; - int16_t *output; - - if(!avpkt->size){ - //FIXME flush - return 0; - } - - context->frame.nb_samples = 8192*4; - if ((ret = avccontext->get_buffer(avccontext, &context->frame)) < 0) { - av_log(avccontext, AV_LOG_ERROR, "get_buffer() failed\n"); - return ret; - } - output = (int16_t *)context->frame.data[0]; - - - op->packet = avpkt->data; - op->bytes = avpkt->size; - -// av_log(avccontext, AV_LOG_DEBUG, "%d %d %d %"PRId64" %"PRId64" %d %d\n", op->bytes, op->b_o_s, op->e_o_s, op->granulepos, op->packetno, buf_size, context->vi.rate); - -/* for(i=0; i<op->bytes; i++) - av_log(avccontext, AV_LOG_DEBUG, "%02X ", op->packet[i]); - av_log(avccontext, AV_LOG_DEBUG, "\n");*/ - - if(vorbis_synthesis(&context->vb, op) == 0) - vorbis_synthesis_blockin(&context->vd, &context->vb) ; - - total_samples = 0 ; - total_bytes = 0 ; - - while((samples = vorbis_synthesis_pcmout(&context->vd, &pcm)) > 0) { - conv(samples, pcm, (char*)output + total_bytes, context->vi.channels) ; - total_bytes += samples * 2 * context->vi.channels ; - total_samples += samples ; - vorbis_synthesis_read(&context->vd, samples) ; - } - - context->frame.nb_samples = total_samples; - *got_frame_ptr = 1; - *(AVFrame *)data = context->frame; - return avpkt->size; -} - - -static int oggvorbis_decode_close(AVCodecContext *avccontext) { - OggVorbisContext *context = avccontext->priv_data ; - - vorbis_info_clear(&context->vi) ; - vorbis_comment_clear(&context->vc) ; - - return 0 ; -} - - -AVCodec ff_libvorbis_decoder = { - .name = "libvorbis", - .type = AVMEDIA_TYPE_AUDIO, - .id = CODEC_ID_VORBIS, - .priv_data_size = sizeof(OggVorbisContext), - .init = oggvorbis_decode_init, - .decode = oggvorbis_decode_frame, - .close = oggvorbis_decode_close, - .capabilities = CODEC_CAP_DELAY, -} ; |