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-rw-r--r--libavcodec/libvorbis.c354
1 files changed, 0 insertions, 354 deletions
diff --git a/libavcodec/libvorbis.c b/libavcodec/libvorbis.c
deleted file mode 100644
index 86c1ed6a75..0000000000
--- a/libavcodec/libvorbis.c
+++ /dev/null
@@ -1,354 +0,0 @@
-/*
- * copyright (c) 2002 Mark Hills <mark@pogo.org.uk>
- *
- * This file is part of Libav.
- *
- * 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.
- *
- * 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 Libav; 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 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;
- }
-}
-
-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;
- }
-
- /* cutoff frequency */
- if (avctx->cutoff > 0) {
- cfreq = avctx->cutoff / 1000.0;
- if ((ret = vorbis_encode_ctl(vi, OV_ECTL_LOWPASS_SET, &cfreq)))
- goto error;
- }
-
- /* 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;
-
- 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 libvorbis_encode_close(AVCodecContext *avctx)
-{
- LibvorbisContext *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);
-
- av_vorbis_parse_free(&s->vp);
-
- return 0;
-}
-
-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;
- int ret;
-
- 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_comment_init(&s->vc);
- 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 +
- 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);
- 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);
-
- 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;
- }
-
- vorbis_comment_clear(&s->vc);
-
- avctx->frame_size = LIBVORBIS_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:
- libvorbis_encode_close(avctx);
- return ret;
-}
-
-static int libvorbis_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
- const AVFrame *frame, int *got_packet_ptr)
-{
- 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]));
- }
- 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");
- 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_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);
- }
-
- *got_packet_ptr = 1;
- return 0;
-}
-
-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,
-};
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