vdr-plugin-softhddevice/codec.c

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///
/// @file codec.c @brief Codec functions
///
/// Copyright (c) 2009 - 2011 by Johns. All Rights Reserved.
///
/// Contributor(s):
///
/// License: AGPLv3
///
/// This program is free software: you can redistribute it and/or modify
/// it under the terms of the GNU Affero General Public License as
/// published by the Free Software Foundation, either version 3 of the
/// License.
///
/// This program 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 Affero General Public License for more details.
///
/// $Id$
//////////////////////////////////////////////////////////////////////////////
///
/// @defgroup Codec The codec module.
///
/// This module contains all decoder and codec functions.
/// It is uses ffmpeg (http://ffmpeg.org) as backend.
///
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <libintl.h>
#define _(str) gettext(str) ///< gettext shortcut
#define _N(str) str ///< gettext_noop shortcut
#include <alsa/iatomic.h>
#include <libavcodec/avcodec.h>
#include <libavcodec/vaapi.h>
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#ifdef USE_VDPAU
#include <libavcodec/vdpau.h>
#endif
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#ifdef MAIN_H
#include MAIN_H
#endif
#include "misc.h"
#include "video.h"
#include "audio.h"
#include "codec.h"
//----------------------------------------------------------------------------
// Video
//----------------------------------------------------------------------------
#if 0
///
/// Video decoder typedef.
///
//typedef struct _video_decoder_ Decoder;
#endif
///
/// Video decoder structure.
///
struct _video_decoder_
{
VideoHwDecoder *HwDecoder; ///< video hardware decoder
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int GetFormatDone; ///< flag get format called!
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AVCodec *VideoCodec; ///< video codec
AVCodecContext *VideoCtx; ///< video codec context
AVFrame *Frame; ///< decoded video frame
};
//----------------------------------------------------------------------------
// Call-backs
//----------------------------------------------------------------------------
/**
** Callback to negotiate the PixelFormat.
**
** @param fmt is the list of formats which are supported by the codec,
** it is terminated by -1 as 0 is a valid format, the
** formats are ordered by quality.
*/
static enum PixelFormat Codec_get_format(AVCodecContext * video_ctx,
const enum PixelFormat *fmt)
{
VideoDecoder *decoder;
decoder = video_ctx->opaque;
Debug(3, "codec: %s: %18p\n", __FUNCTION__, decoder);
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decoder->GetFormatDone = 1;
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return Video_get_format(decoder->HwDecoder, video_ctx, fmt);
}
/**
** Video buffer management, get buffer for frame.
**
** Called at the beginning of each frame to get a buffer for it.
**
** @param video_ctx Codec context
** @param frame Get buffer for this frame
*/
static int Codec_get_buffer(AVCodecContext * video_ctx, AVFrame * frame)
{
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VideoDecoder *decoder;
decoder = video_ctx->opaque;
if (!decoder->GetFormatDone) { // get_format missing
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enum PixelFormat fmts[2];
fprintf(stderr, "codec: buggy ffmpeg\n");
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Warning(_("codec: buggy ffmpeg\n"));
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fmts[0] = video_ctx->pix_fmt;
fmts[1] = PIX_FMT_NONE;
Codec_get_format(video_ctx, fmts);
}
// VDPAU: PIX_FMT_VDPAU_H264 .. PIX_FMT_VDPAU_VC1 PIX_FMT_VDPAU_MPEG4
if ((PIX_FMT_VDPAU_H264 <= video_ctx->pix_fmt
&& video_ctx->pix_fmt <= PIX_FMT_VDPAU_VC1)
|| video_ctx->pix_fmt == PIX_FMT_VDPAU_MPEG4) {
unsigned surface;
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struct vdpau_render_state *vrs;
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surface = VideoGetSurface(decoder->HwDecoder);
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vrs = av_calloc(1, sizeof(struct vdpau_render_state));
vrs->surface = surface;
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//Debug(3, "codec: use surface %#010x\n", surface);
frame->type = FF_BUFFER_TYPE_USER;
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#if LIBAVCODEC_VERSION_INT <= AV_VERSION_INT(53,46,0)
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frame->age = 256 * 256 * 256 * 64;
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#endif
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// render
frame->data[0] = (void *)vrs;
frame->data[1] = NULL;
frame->data[2] = NULL;
frame->data[3] = NULL;
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// reordered frames
if (video_ctx->pkt) {
frame->pkt_pts = video_ctx->pkt->pts;
} else {
frame->pkt_pts = AV_NOPTS_VALUE;
}
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return 0;
}
// VA-API:
if (video_ctx->hwaccel_context) {
unsigned surface;
surface = VideoGetSurface(decoder->HwDecoder);
//Debug(3, "codec: use surface %#010x\n", surface);
frame->type = FF_BUFFER_TYPE_USER;
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#if LIBAVCODEC_VERSION_INT <= AV_VERSION_INT(53,46,0)
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frame->age = 256 * 256 * 256 * 64;
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#endif
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// vaapi needs both fields set
frame->data[0] = (void *)(size_t) surface;
frame->data[3] = (void *)(size_t) surface;
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// reordered frames
if (video_ctx->pkt) {
frame->pkt_pts = video_ctx->pkt->pts;
} else {
frame->pkt_pts = AV_NOPTS_VALUE;
}
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return 0;
}
//Debug(3, "codec: fallback to default get_buffer\n");
return avcodec_default_get_buffer(video_ctx, frame);
}
/**
** Video buffer management, release buffer for frame.
** Called to release buffers which were allocated with get_buffer.
**
** @param video_ctx Codec context
** @param frame Release buffer for this frame
*/
static void Codec_release_buffer(AVCodecContext * video_ctx, AVFrame * frame)
{
// VDPAU: PIX_FMT_VDPAU_H264 .. PIX_FMT_VDPAU_VC1 PIX_FMT_VDPAU_MPEG4
if ((PIX_FMT_VDPAU_H264 <= video_ctx->pix_fmt
&& video_ctx->pix_fmt <= PIX_FMT_VDPAU_VC1)
|| video_ctx->pix_fmt == PIX_FMT_VDPAU_MPEG4) {
VideoDecoder *decoder;
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struct vdpau_render_state *vrs;
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unsigned surface;
decoder = video_ctx->opaque;
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vrs = (struct vdpau_render_state *)frame->data[0];
surface = vrs->surface;
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//Debug(3, "codec: release surface %#010x\n", surface);
VideoReleaseSurface(decoder->HwDecoder, surface);
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av_freep(&vrs->bitstream_buffers);
vrs->bitstream_buffers_allocated = 0;
av_freep(&frame->data[0]);
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return;
}
// VA-API
if (video_ctx->hwaccel_context) {
VideoDecoder *decoder;
unsigned surface;
decoder = video_ctx->opaque;
surface = (unsigned)(size_t) frame->data[3];
//Debug(3, "codec: release surface %#010x\n", surface);
VideoReleaseSurface(decoder->HwDecoder, surface);
frame->data[0] = NULL;
frame->data[3] = NULL;
return;
}
//Debug(3, "codec: fallback to default release_buffer\n");
return avcodec_default_release_buffer(video_ctx, frame);
}
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/**
** Draw a horizontal band.
**
** @param video_ctx Codec context
** @param frame draw this frame
** @param y y position of slice
** @param type 1->top field, 2->bottom field, 3->frame
** @param offset offset into AVFrame.data from which slice
** should be read
** @param height height of slice
*/
static void Codec_draw_horiz_band(AVCodecContext * video_ctx,
const AVFrame * frame, __attribute__ ((unused))
int offset[AV_NUM_DATA_POINTERS], __attribute__ ((unused))
int y, __attribute__ ((unused))
int type, __attribute__ ((unused))
int height)
{
// VDPAU: PIX_FMT_VDPAU_H264 .. PIX_FMT_VDPAU_VC1 PIX_FMT_VDPAU_MPEG4
if ((PIX_FMT_VDPAU_H264 <= video_ctx->pix_fmt
&& video_ctx->pix_fmt <= PIX_FMT_VDPAU_VC1)
|| video_ctx->pix_fmt == PIX_FMT_VDPAU_MPEG4) {
VideoDecoder *decoder;
struct vdpau_render_state *vrs;
//unsigned surface;
decoder = video_ctx->opaque;
vrs = (struct vdpau_render_state *)frame->data[0];
//surface = vrs->surface;
//Debug(3, "codec: draw slice surface %#010x\n", surface);
//Debug(3, "codec: %d references\n", vrs->info.h264.num_ref_frames);
VideoDrawRenderState(decoder->HwDecoder, vrs);
}
return;
}
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//----------------------------------------------------------------------------
// Test
//----------------------------------------------------------------------------
/**
** Allocate a new video decoder context.
**
** @param hw_decoder video hardware decoder
**
** @returns private decoder pointer for audio/video decoder.
*/
VideoDecoder *CodecVideoNewDecoder(VideoHwDecoder * hw_decoder)
{
VideoDecoder *decoder;
if (!(decoder = calloc(1, sizeof(*decoder)))) {
Fatal(_("codec: Can't allocate vodeo decoder\n"));
}
decoder->HwDecoder = hw_decoder;
return decoder;
}
/**
** Open video decoder.
**
** @param decoder private video decoder
** @param name video codec name
** @param codec_id video codec id, used if name == NULL
*/
void CodecVideoOpen(VideoDecoder * decoder, const char *name, int codec_id)
{
AVCodec *video_codec;
Debug(3, "codec: using codec %s or ID %#04x\n", name, codec_id);
//
// ffmpeg compatibility hack
//
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#if 1 || (LIBAVCODEC_VERSION_INT <= AV_VERSION_INT(52,96,0))
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if (name) {
if (!strcmp(name, "h264video_vdpau")) {
name = "h264_vdpau";
} else if (!strcmp(name, "mpeg4video_vdpau")) {
name = "mpeg4_vdpau";
} else if (!strcmp(name, "vc1video_vdpau")) {
name = "vc1_vdpau";
} else if (!strcmp(name, "wmv3video_vdpau")) {
name = "wmv3_vdpau";
}
}
#endif
if (name && (video_codec = avcodec_find_decoder_by_name(name))) {
Debug(3, "codec: vdpau decoder found\n");
} else if (!(video_codec = avcodec_find_decoder(codec_id))) {
Fatal(_("codec: codec ID %#04x not found\n"), codec_id);
// FIXME: none fatal
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}
decoder->VideoCodec = video_codec;
if (!(decoder->VideoCtx = avcodec_alloc_context3(video_codec))) {
Fatal(_("codec: can't allocate video codec context\n"));
}
// open codec
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#if LIBAVCODEC_VERSION_INT <= AV_VERSION_INT(53,5,0)
if (avcodec_open(decoder->VideoCtx, video_codec) < 0) {
Fatal(_("codec: can't open video codec!\n"));
}
#else
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if (avcodec_open2(decoder->VideoCtx, video_codec, NULL) < 0) {
Fatal(_("codec: can't open video codec!\n"));
}
#endif
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decoder->VideoCtx->opaque = decoder; // our structure
/*
// FIXME: the number of cpu's should be configurable
// Today this makes no big sense H264 is broken with current streams.
avcodec_thread_init(decoder->VideoCtx, 2); // support dual-cpu's
*/
Debug(3, "codec: video '%s'\n", decoder->VideoCtx->codec_name);
if (codec_id == CODEC_ID_H264) {
// 2.53 Ghz CPU is too slow for this codec at 1080i
//decoder->VideoCtx->skip_loop_filter = AVDISCARD_ALL;
//decoder->VideoCtx->skip_loop_filter = AVDISCARD_BIDIR;
}
if (video_codec->capabilities & CODEC_CAP_TRUNCATED) {
Debug(3, "codec: video can use truncated packets\n");
// we do not send complete frames
decoder->VideoCtx->flags |= CODEC_FLAG_TRUNCATED;
}
// FIXME: own memory management for video frames.
if (video_codec->capabilities & CODEC_CAP_DR1) {
Debug(3, "codec: can use own buffer management\n");
}
if (video_codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) {
Debug(3, "codec: can export data for HW decoding (VDPAU)\n");
}
#ifdef CODEC_CAP_FRAME_THREADS
if (video_codec->capabilities & CODEC_CAP_FRAME_THREADS) {
Debug(3, "codec: codec supports frame threads\n");
}
#endif
//decoder->VideoCtx->debug = FF_DEBUG_STARTCODE;
if (video_codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) {
// FIXME: get_format never called.
decoder->VideoCtx->get_format = Codec_get_format;
decoder->VideoCtx->get_buffer = Codec_get_buffer;
decoder->VideoCtx->release_buffer = Codec_release_buffer;
decoder->VideoCtx->reget_buffer = Codec_get_buffer;
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decoder->VideoCtx->draw_horiz_band = Codec_draw_horiz_band;
decoder->VideoCtx->slice_flags =
SLICE_FLAG_CODED_ORDER | SLICE_FLAG_ALLOW_FIELD;
decoder->VideoCtx->thread_count = 1;
decoder->VideoCtx->active_thread_type = 0;
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} else {
decoder->VideoCtx->hwaccel_context =
VideoGetVaapiContext(decoder->HwDecoder);
}
// our pixel format video hardware decoder hook
if (decoder->VideoCtx->hwaccel_context) {
decoder->VideoCtx->get_format = Codec_get_format;
decoder->VideoCtx->get_buffer = Codec_get_buffer;
decoder->VideoCtx->release_buffer = Codec_release_buffer;
decoder->VideoCtx->reget_buffer = Codec_get_buffer;
#if 0
decoder->VideoCtx->thread_count = 1;
decoder->VideoCtx->draw_horiz_band = NULL;
decoder->VideoCtx->slice_flags =
SLICE_FLAG_CODED_ORDER | SLICE_FLAG_ALLOW_FIELD;
//decoder->VideoCtx->flags |= CODEC_FLAG_EMU_EDGE;
#endif
}
//
// Prepare frame buffer for decoder
//
if (!(decoder->Frame = avcodec_alloc_frame())) {
Fatal(_("codec: can't allocate decoder frame\n"));
}
}
/**
** Close video decoder.
**
** @param video_decoder private video decoder
*/
void CodecVideoClose(VideoDecoder * video_decoder)
{
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// FIXME: play buffered data
av_freep(&video_decoder->Frame);
if (video_decoder->VideoCtx) {
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avcodec_close(video_decoder->VideoCtx);
av_freep(&video_decoder->VideoCtx);
}
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}
#if 0
/**
** Display pts...
**
** ffmpeg 0.9 pts always AV_NOPTS_VALUE
** ffmpeg 0.9 pkt_pts nice monotonic (only with HD)
** ffmpeg 0.9 pkt_dts wild jumping -160 - 340 ms
**
** libav 0.8_pre20111116 pts always AV_NOPTS_VALUE
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** libav 0.8_pre20111116 pkt_pts always 0 (could be fixed?)
** libav 0.8_pre20111116 pkt_dts wild jumping -160 - 340 ms
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*/
void DisplayPts(AVCodecContext * video_ctx, AVFrame * frame)
{
int ms_delay;
int64_t pts;
static int64_t last_pts;
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pts = frame->pkt_pts;
if (pts == (int64_t) AV_NOPTS_VALUE) {
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printf("*");
}
ms_delay = (1000 * video_ctx->time_base.num) / video_ctx->time_base.den;
ms_delay += frame->repeat_pict * ms_delay / 2;
printf("codec: PTS %s%s %" PRId64 " %d %d/%d %dms\n",
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frame->repeat_pict ? "r" : " ", frame->interlaced_frame ? "I" : " ",
pts, (int)(pts - last_pts) / 90, video_ctx->time_base.num,
video_ctx->time_base.den, ms_delay);
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if (pts != (int64_t) AV_NOPTS_VALUE) {
last_pts = pts;
}
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}
#endif
/**
** Decode a video packet.
**
** @param decoder video decoder data
** @param avpkt video packet
**
** @note this version destroys avpkt!!
*/
void CodecVideoDecode(VideoDecoder * decoder, AVPacket * avpkt)
{
AVCodecContext *video_ctx;
AVFrame *frame;
int used;
int got_frame;
video_ctx = decoder->VideoCtx;
frame = decoder->Frame;
next_part:
// FIXME: this function can crash with bad packets
used = avcodec_decode_video2(video_ctx, frame, &got_frame, avpkt);
Debug(4, "%s: %p %d -> %d %d\n", __FUNCTION__, avpkt->data, avpkt->size,
used, got_frame);
if (got_frame) { // frame completed
//DisplayPts(video_ctx, frame);
if (video_ctx->hwaccel_context) {
VideoRenderFrame(decoder->HwDecoder, video_ctx, frame);
} else {
VideoRenderFrame(decoder->HwDecoder, video_ctx, frame);
}
} else {
// some frames are needed for references, interlaced frames ...
// could happen with h264 dvb streams, just drop data.
Debug(4, "codec: %8d incomplete interlaced frame %d bytes used\n",
video_ctx->frame_number, used);
}
if (used != avpkt->size) {
if (used == 0) {
goto next_part;
}
if (used >= 0) {
// some tv channels, produce this
Debug(4,
"codec: ooops didn't use complete video packet used %d of %d\n",
used, avpkt->size);
avpkt->data += used;
avpkt->size -= used;
goto next_part;
}
Debug(3, "codec: bad frame %d\n", used);
}
return;
}
//----------------------------------------------------------------------------
// Audio
//----------------------------------------------------------------------------
#if 0
///
/// Audio decoder typedef.
///
typedef struct _audio_decoder_ AudioDecoder;
#endif
///
/// Audio decoder structure.
///
struct _audio_decoder_
{
AVCodec *AudioCodec; ///< audio codec
AVCodecContext *AudioCtx; ///< audio codec context
/// audio parser to support wired dvb streaks
AVCodecParserContext *AudioParser;
int SampleRate; ///< current sample rate
int Channels; ///< current channels
int HwSampleRate; ///< hw sample rate
int HwChannels; ///< hw channels
ReSampleContext *ReSample; ///< audio resampling context
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};
/**
** Allocate a new audio decoder context.
**
** @param hw_decoder video hardware decoder
**
** @returns private decoder pointer for audio/video decoder.
*/
AudioDecoder *CodecAudioNewDecoder(void)
{
AudioDecoder *audio_decoder;
if (!(audio_decoder = calloc(1, sizeof(*audio_decoder)))) {
Fatal(_("codec: Can't allocate audio decoder\n"));
}
return audio_decoder;
}
/**
** Open audio decoder.
**
** @param audio_decoder private audio decoder
** @param name audio codec name
** @param codec_id audio codec id, used if name == NULL
*/
void CodecAudioOpen(AudioDecoder * audio_decoder, const char *name,
int codec_id)
{
AVCodec *audio_codec;
if (name && (audio_codec = avcodec_find_decoder_by_name(name))) {
Debug(3, "codec: audio decoder '%s' found\n", name);
} else if (!(audio_codec = avcodec_find_decoder(codec_id))) {
Fatal(_("codec: codec ID %#04x not found\n"), codec_id);
// FIXME: errors aren't fatal
}
audio_decoder->AudioCodec = audio_codec;
if (!(audio_decoder->AudioCtx = avcodec_alloc_context3(audio_codec))) {
Fatal(_("codec: can't allocate audio codec context\n"));
}
// open codec
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#if LIBAVCODEC_VERSION_INT <= AV_VERSION_INT(53,5,0)
if (avcodec_open(audio_decoder->AudioCtx, audio_codec) < 0) {
Fatal(_("codec: can't open audio codec\n"));
}
#else
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if (avcodec_open2(audio_decoder->AudioCtx, audio_codec, NULL) < 0) {
Fatal(_("codec: can't open audio codec\n"));
}
#endif
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Debug(3, "codec: audio '%s'\n", audio_decoder->AudioCtx->codec_name);
if (audio_codec->capabilities & CODEC_CAP_TRUNCATED) {
Debug(3, "codec: audio can use truncated packets\n");
// we do not send complete frames
audio_decoder->AudioCtx->flags |= CODEC_FLAG_TRUNCATED;
}
if (!(audio_decoder->AudioParser =
av_parser_init(audio_decoder->AudioCtx->codec_id))) {
Fatal(_("codec: can't init audio parser\n"));
}
audio_decoder->SampleRate = 0;
audio_decoder->Channels = 0;
audio_decoder->HwSampleRate = 0;
audio_decoder->HwChannels = 0;
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}
/**
** Close audio decoder.
**
** @param audio_decoder private audio decoder
*/
void CodecAudioClose(AudioDecoder * audio_decoder)
{
// FIXME: output any buffered data
if (audio_decoder->ReSample) {
audio_resample_close(audio_decoder->ReSample);
audio_decoder->ReSample = NULL;
}
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if (audio_decoder->AudioParser) {
av_parser_close(audio_decoder->AudioParser);
audio_decoder->AudioParser = NULL;
}
if (audio_decoder->AudioCtx) {
avcodec_close(audio_decoder->AudioCtx);
av_freep(&audio_decoder->AudioCtx);
}
}
/**
** Decode an audio packet.
**
** PTS must be handled self.
**
** @param audio_decoder audio_Decoder data
** @param avpkt audio packet
*/
void CodecAudioDecode(AudioDecoder * audio_decoder, AVPacket * avpkt)
{
int16_t buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 4 +
FF_INPUT_BUFFER_PADDING_SIZE] __attribute__ ((aligned(16)));
AVCodecContext *audio_ctx;
int index;
if (!audio_decoder->AudioParser) {
Fatal(_("codec: internal error parser freeded while running\n"));
}
#define spkt avpkt
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#if 0 // didn't fix crash in av_parser_parse2
AVPacket spkt[1];
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// av_new_packet reserves FF_INPUT_BUFFER_PADDING_SIZE and clears it
if (av_new_packet(spkt, avpkt->size)) {
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Error(_("codec: out of memory\n"));
return;
}
memcpy(spkt->data, avpkt->data, avpkt->size);
spkt->pts = avpkt->pts;
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spkt->dts = avpkt->dts;
#endif
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audio_ctx = audio_decoder->AudioCtx;
index = 0;
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while (spkt->size > index) {
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int n;
int l;
AVPacket dpkt[1];
av_init_packet(dpkt);
n = av_parser_parse2(audio_decoder->AudioParser, audio_ctx,
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&dpkt->data, &dpkt->size, spkt->data + index, spkt->size - index,
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!index ? (uint64_t) spkt->pts : AV_NOPTS_VALUE,
!index ? (uint64_t) spkt->dts : AV_NOPTS_VALUE, -1);
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if (dpkt->size) {
int buf_sz;
dpkt->pts = audio_decoder->AudioParser->pts;
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dpkt->dts = audio_decoder->AudioParser->dts;
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buf_sz = sizeof(buf);
l = avcodec_decode_audio3(audio_ctx, buf, &buf_sz, dpkt);
if (l < 0) { // no audio frame could be decompressed
Error(_("codec: error audio data\n"));
break;
}
#ifdef notyetFF_API_OLD_DECODE_AUDIO
// FIXME: ffmpeg git comeing
int got_frame;
avcodec_decode_audio4(audio_ctx, frame, &got_frame, dpkt);
#else
#endif
// Update audio clock
if ((uint64_t) dpkt->pts != AV_NOPTS_VALUE) {
AudioSetClock(dpkt->pts);
}
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// FIXME: must first play remainings bytes, than change and play new.
if (audio_decoder->SampleRate != audio_ctx->sample_rate
|| audio_decoder->Channels != audio_ctx->channels) {
int err;
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if (audio_decoder->ReSample) {
audio_resample_close(audio_decoder->ReSample);
audio_decoder->ReSample = NULL;
}
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audio_decoder->SampleRate = audio_ctx->sample_rate;
audio_decoder->HwSampleRate = audio_ctx->sample_rate;
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audio_decoder->Channels = audio_ctx->channels;
audio_decoder->HwChannels = audio_ctx->channels;
// channels not support?
if ((err =
AudioSetup(&audio_decoder->HwSampleRate,
&audio_decoder->HwChannels))) {
Debug(3, "codec/audio: resample %d -> %d\n",
audio_ctx->channels, audio_decoder->HwChannels);
if (err == 1) {
audio_decoder->ReSample =
av_audio_resample_init(audio_decoder->HwChannels,
audio_ctx->channels, audio_decoder->HwSampleRate,
audio_ctx->sample_rate, audio_ctx->sample_fmt,
audio_ctx->sample_fmt, 16, 10, 0, 0.8);
} else {
// FIXME: handle errors
audio_decoder->HwChannels = 0;
audio_decoder->HwSampleRate = 0;
}
}
}
if (audio_decoder->HwSampleRate && audio_decoder->HwChannels) {
// need to resample audio
if (audio_decoder->ReSample) {
int16_t outbuf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 4 +
FF_INPUT_BUFFER_PADDING_SIZE]
__attribute__ ((aligned(16)));
int outlen;
outlen =
audio_resample(audio_decoder->ReSample, outbuf, buf,
buf_sz);
AudioEnqueue(outbuf, outlen);
} else {
AudioEnqueue(buf, buf_sz);
}
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}
if (dpkt->size > l) {
Error(_("codec: error more than one frame data\n"));
}
}
index += n;
}
#if 0
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av_destruct_packet(spkt);
#endif
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}
//----------------------------------------------------------------------------
// Codec
//----------------------------------------------------------------------------
/**
** Empty log callback
*/
static void CodecNoopCallback( __attribute__ ((unused))
void *ptr, __attribute__ ((unused))
int level, __attribute__ ((unused))
const char *fmt, __attribute__ ((unused)) va_list vl)
{
}
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/**
** Codec init
*/
void CodecInit(void)
{
#ifndef DEBUG
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// disable display ffmpeg error messages
av_log_set_callback(CodecNoopCallback);
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#else
(void)CodecNoopCallback;
#endif
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avcodec_register_all(); // register all formats and codecs
}
/**
** Codec exit.
*/
void CodecExit(void)
{
}