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Diffstat (limited to 'contrib/ffmpeg/libavcodec/libvorbis.c')
-rw-r--r--contrib/ffmpeg/libavcodec/libvorbis.c220
1 files changed, 0 insertions, 220 deletions
diff --git a/contrib/ffmpeg/libavcodec/libvorbis.c b/contrib/ffmpeg/libavcodec/libvorbis.c
deleted file mode 100644
index 3fb507dad..000000000
--- a/contrib/ffmpeg/libavcodec/libvorbis.c
+++ /dev/null
@@ -1,220 +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 oggvorbis.c
- * Ogg Vorbis codec support via libvorbisenc.
- * @author Mark Hills <mark@pogo.org.uk>
- */
-
-#include <vorbis/vorbisenc.h>
-
-#include "avcodec.h"
-#include "bytestream.h"
-
-#undef NDEBUG
-#include <assert.h>
-
-#define OGGVORBIS_FRAME_SIZE 64
-
-#define BUFFER_SIZE (1024*64)
-
-typedef struct OggVorbisContext {
- vorbis_info vi ;
- vorbis_dsp_state vd ;
- vorbis_block vb ;
- uint8_t buffer[BUFFER_SIZE];
- int buffer_index;
-
- /* decoder */
- vorbis_comment vc ;
- ogg_packet op;
-} OggVorbisContext ;
-
-
-static int oggvorbis_init_encoder(vorbis_info *vi, AVCodecContext *avccontext) {
- double cfreq;
-
- 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))
- return -1;
- } else {
- /* constant bitrate */
- if(vorbis_encode_setup_managed(vi, avccontext->channels,
- avccontext->sample_rate, -1, avccontext->bit_rate, -1))
- return -1;
-
-#ifdef OGGVORBIS_VBR_BY_ESTIMATE
- /* variable bitrate by estimate */
- if(vorbis_encode_ctl(vi, OV_ECTL_RATEMANAGE_AVG, NULL))
- return -1;
-#endif
- }
-
- /* cutoff frequency */
- if(avccontext->cutoff > 0) {
- cfreq = avccontext->cutoff / 1000.0;
- if(vorbis_encode_ctl(vi, OV_ECTL_LOWPASS_SET, &cfreq))
- return -1;
- }
-
- return vorbis_encode_setup_init(vi);
-}
-
-static int oggvorbis_encode_init(AVCodecContext *avccontext) {
- OggVorbisContext *context = avccontext->priv_data ;
- ogg_packet header, header_comm, header_code;
- uint8_t *p;
- unsigned int offset, len;
-
- 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") ;
- return -1 ;
- }
- 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_analysis_headerout(&context->vd, &context->vc, &header,
- &header_comm, &header_code);
-
- 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;
- 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;
- avccontext->extradata_size = offset;
- avccontext->extradata= av_realloc(avccontext->extradata, avccontext->extradata_size);
-
-/* vorbis_block_clear(&context->vb);
- vorbis_dsp_clear(&context->vd);
- vorbis_info_clear(&context->vi);*/
- vorbis_comment_clear(&context->vc);
-
- avccontext->frame_size = OGGVORBIS_FRAME_SIZE ;
-
- avccontext->coded_frame= avcodec_alloc_frame();
- avccontext->coded_frame->key_frame= 1;
-
- return 0 ;
-}
-
-
-static int oggvorbis_encode_frame(AVCodecContext *avccontext,
- unsigned char *packets,
- int buf_size, void *data)
-{
- OggVorbisContext *context = avccontext->priv_data ;
- float **buffer ;
- ogg_packet op ;
- signed short *audio = data ;
- int l, samples = data ? OGGVORBIS_FRAME_SIZE : 0;
-
- 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;
- }
- }
-
- vorbis_analysis_wrote(&context->vd, samples) ;
-
- 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);
- }
- }
-
- 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);
- }
-
- return l;
-}
-
-
-static 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 */
-
- vorbis_block_clear(&context->vb);
- vorbis_dsp_clear(&context->vd);
- vorbis_info_clear(&context->vi);
-
- av_freep(&avccontext->coded_frame);
- av_freep(&avccontext->extradata);
-
- 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,
-} ;
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-02 03:22:12 +0000