int main(int argc, char *argv[])
{
AVFormatContext *input_ctx = NULL;
int video_stream, ret;
AVStream *video = NULL;
AVCodecContext *decoder_ctx = NULL;
AVCodec *decoder = NULL;
AVPacket packet;
enum AVHWDeviceType type;
int i;
if (argc < 4) {
fprintf(stderr, "Usage: %s <device type> <input file> <output file>\n", argv[0]);
return -1;
}
type = av_hwdevice_find_type_by_name(argv[1]);
if (type == AV_HWDEVICE_TYPE_NONE) {
fprintf(stderr, "Device type %s is not supported.\n", argv[1]);
fprintf(stderr, "Available device types:");
while((type = av_hwdevice_iterate_types(type)) != AV_HWDEVICE_TYPE_NONE)
fprintf(stderr, " %s", av_hwdevice_get_type_name(type));
fprintf(stderr, "\n");
return -1;
}
/* open the input file */
if (avformat_open_input(&input_ctx, argv[2], NULL, NULL) != 0) {
fprintf(stderr, "Cannot open input file '%s'\n", argv[2]);
return -1;
}
if (avformat_find_stream_info(input_ctx, NULL) < 0) {
fprintf(stderr, "Cannot find input stream information.\n");
return -1;
}
/* find the video stream information */
ret = av_find_best_stream(input_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, &decoder, 0);
if (ret < 0) {
fprintf(stderr, "Cannot find a video stream in the input file\n");
return -1;
}
video_stream = ret;
for (i = 0;; i++) {
const AVCodecHWConfig *config = avcodec_get_hw_config(decoder, i);
if (!config) {
fprintf(stderr, "Decoder %s does not support device type %s.\n",
decoder->name, av_hwdevice_get_type_name(type));
return -1;
}
if (config->methods & AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX &&
config->device_type == type) {
hw_pix_fmt = config->pix_fmt;
break;
}
}
if (!(decoder_ctx = avcodec_alloc_context3(decoder)))
return AVERROR(ENOMEM);
video = input_ctx->streams[video_stream];
if (avcodec_parameters_to_context(decoder_ctx, video->codecpar) < 0)
return -1;
decoder_ctx->get_format = get_hw_format;
av_opt_set_int(decoder_ctx, "refcounted_frames", 1, 0);
if (hw_decoder_init(decoder_ctx, type) < 0)
return -1;
if ((ret = avcodec_open2(decoder_ctx, decoder, NULL)) < 0) {
fprintf(stderr, "Failed to open codec for stream #%u\n", video_stream);
return -1;
}
/* open the file to dump raw data */
output_file = fopen(argv[3], "w+");
/* actual decoding and dump the raw data */
while (ret >= 0) {
if ((ret = av_read_frame(input_ctx, &packet)) < 0)
break;
if (video_stream == packet.stream_index)
ret = decode_write(decoder_ctx, &packet);
av_packet_unref(&packet);
}
/* flush the decoder */
packet.data = NULL;
packet.size = 0;
ret = decode_write(decoder_ctx, &packet);
av_packet_unref(&packet);
if (output_file)
fclose(output_file);
avcodec_free_context(&decoder_ctx);
avformat_close_input(&input_ctx);
av_buffer_unref(&hw_device_ctx);
return 0;
}
static AVCodecContext *wrapped_avcodec_get_context(uint32_t cAVIdx, AVStream *stream)
{
#if (LIBAVFORMAT_VERSION_MAJOR > 57) || ((LIBAVFORMAT_VERSION_MAJOR == 57) && (LIBAVFORMAT_VERSION_MINOR > 32))
AVCodecContext *avCodecCtx = restore_avcodec_context(cAVIdx, stream->id);
if (!avCodecCtx)
{
avCodecCtx = avcodec_alloc_context3(NULL);
if (!avCodecCtx)
{
ffmpeg_err("context3 alloc for stream %d failed\n", (int)stream->id);
return NULL;
}
if (avcodec_parameters_to_context(avCodecCtx, stream->codecpar) < 0)
{
ffmpeg_err("parameters to context for stream %d failed\n", (int)stream->id);
avcodec_free_context(&avCodecCtx);
return NULL;
}
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(58, 9, 100)
av_codec_set_pkt_timebase(avCodecCtx, stream->time_base);
#else
avCodecCtx->pkt_timebase = stream->time_base;
#endif
store_avcodec_context(avCodecCtx, cAVIdx, stream->id);
return avCodecCtx;
}
#else
return stream->codec;
#endif
}
STATUS DemuxerLibAV::selectAudioStream(S32 index_audio) {
if (!_initialized) {
log->printf("DemuxerLibAV::selectAudioStream(): demuxer not initialized!\n");
return S_FAIL;
}
S32 count_audio = 0;
for (U32 i = 0; i < _afc->nb_streams; i++) {
AVStream *stream = _afc->streams[i];
AVCodec *codec = avcodec_find_decoder(stream->codecpar->codec_id);
if (codec == NULL) {
log->printf("DemuxerLibAV::selectAudioStream(): avcodec_find_decoder failed!\n");
return S_FAIL;
}
AVCodecContext *cc = avcodec_alloc_context3(codec);
if (cc == NULL) {
log->printf("DemuxerLibAV::selectAudioStream(): avcodec_alloc_context3 failed!\n");
return S_FAIL;
}
if (avcodec_parameters_to_context(cc, stream->codecpar) < 0) {
log->printf("DemuxerLibAV::selectAudioStream(): avcodec_alloc_context3 failed!\n");
avcodec_free_context(&cc);
return S_FAIL;
}
if (cc->codec_type == AVMEDIA_TYPE_AUDIO) {
if (count_audio++ == index_audio || index_audio == -1) {
_audioStream = _afc->streams[i];
return S_OK;
}
}
}
return S_FAIL;
}
AVCodecContext* movie_player::get_codec_context_for_stream(AVCodec* codec, AVStream* stream) const
{
#if (defined(CORSIX_TH_USE_LIBAV) && LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 14, 0)) || \
(defined(CORSIX_TH_USE_FFMPEG) && LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 33, 100))
AVCodecContext* ctx = avcodec_alloc_context3(codec);
avcodec_parameters_to_context(ctx, stream->codecpar);
return ctx;
#else
return stream->codec;
#endif
}
InputContext * input_context_new (const char * filename) {
int ok = 0;
// open file
AVFormatContext * pfc = NULL;
ok = avformat_open_input(&pfc, filename, NULL, NULL);
if (ok != 0) {
goto failed;
}
// find stream
int stnb = av_find_best_stream(pfc, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
AVStream * pst = pfc->streams[stnb];
AVRational * ptb = &pst->time_base;
int64_t duration = av_rescale(pst->duration, ptb->num, ptb->den);
// find codec
AVCodec * pc = avcodec_find_decoder(pst->codecpar->codec_id);
if (!pc) {
goto close_demuxer;
}
AVCodecContext * pcc = avcodec_alloc_context3(pc);
if (!pcc) {
goto close_demuxer;
}
ok = avcodec_parameters_to_context(pcc, pst->codecpar);
if (ok < 0) {
goto close_decoder;
}
ok = avcodec_open2(pcc, pc, NULL);
if (ok != 0) {
goto close_decoder;
}
InputContext * context = malloc(sizeof(InputContext));
context->format_context = pfc;
context->stream = pst;
context->codec = pc;
context->codec_context = pcc;
context->stream_index = stnb;
context->time_base = ptb;
context->duration = duration;
return context;
close_decoder:
avcodec_free_context(&pcc);
close_demuxer:
avformat_close_input(&pfc);
failed:
return NULL;
}
static int open_input_file(const char *filename)
{
int ret;
AVCodec *decoder = NULL;
AVStream *video = NULL;
if ((ret = avformat_open_input(&ifmt_ctx, filename, NULL, NULL)) < 0) {
fprintf(stderr, "Cannot open input file '%s', Error code: %s\n",
filename, av_err2str(ret));
return ret;
}
if ((ret = avformat_find_stream_info(ifmt_ctx, NULL)) < 0) {
fprintf(stderr, "Cannot find input stream information. Error code: %s\n",
av_err2str(ret));
return ret;
}
ret = av_find_best_stream(ifmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, &decoder, 0);
if (ret < 0) {
fprintf(stderr, "Cannot find a video stream in the input file. "
"Error code: %s\n", av_err2str(ret));
return ret;
}
video_stream = ret;
if (!(decoder_ctx = avcodec_alloc_context3(decoder)))
return AVERROR(ENOMEM);
video = ifmt_ctx->streams[video_stream];
if ((ret = avcodec_parameters_to_context(decoder_ctx, video->codecpar)) < 0) {
fprintf(stderr, "avcodec_parameters_to_context error. Error code: %s\n",
av_err2str(ret));
return ret;
}
decoder_ctx->hw_device_ctx = av_buffer_ref(hw_device_ctx);
if (!decoder_ctx->hw_device_ctx) {
fprintf(stderr, "A hardware device reference create failed.\n");
return AVERROR(ENOMEM);
}
decoder_ctx->get_format = get_vaapi_format;
if ((ret = avcodec_open2(decoder_ctx, decoder, NULL)) < 0)
fprintf(stderr, "Failed to open codec for decoding. Error code: %s\n",
av_err2str(ret));
return ret;
}
/**
* Opens the given stream, i.e. sets up a decoder.
*
* @param env JNIEnv
* @param stream AVStream
*/
int ff_open_stream(JNIEnv *env, AVStream *stream, AVCodecContext **context) {
#ifdef DEBUG
fprintf(stderr, "Opening stream...\n");
#endif
int res = 0;
AVCodec *decoder = NULL;
AVDictionary *opts = NULL;
int refcount = 0; // is this correct?
decoder = avcodec_find_decoder(stream->codecpar->codec_id);
if (!decoder) {
fprintf(stderr, "Failed to find %s codec\n", av_get_media_type_string(AVMEDIA_TYPE_AUDIO));
res = AVERROR(EINVAL);
throwUnsupportedAudioFileExceptionIfError(env, res, "Failed to find codec.");
goto bail;
}
*context = avcodec_alloc_context3(decoder);
if (!context) {
fprintf(stderr, "Failed to allocate context\n");
res = AVERROR(EINVAL);
throwUnsupportedAudioFileExceptionIfError(env, res, "Failed to allocate codec context.");
goto bail;
}
/* Copy codec parameters from input stream to output codec context */
if ((res = avcodec_parameters_to_context(*context, stream->codecpar)) < 0) {
fprintf(stderr, "Failed to copy %s codec parameters to decoder context\n", av_get_media_type_string(AVMEDIA_TYPE_AUDIO));
throwUnsupportedAudioFileExceptionIfError(env, res, "Failed to copy codec parameters.");
goto bail;
}
/* Init the decoders, with or without reference counting */
av_dict_set(&opts, "refcounted_frames", refcount ? "1" : "0", 0);
if ((res = avcodec_open2(*context, decoder, &opts)) < 0) {
fprintf(stderr, "Failed to open %s codec\n", av_get_media_type_string(AVMEDIA_TYPE_AUDIO));
throwUnsupportedAudioFileExceptionIfError(env, res, "Failed to open codec.");
goto bail;
}
#ifdef DEBUG
fprintf(stderr, "Stream was opened.\n");
#endif
return res;
bail:
return res;
}
// Set avctx codec headers for decoding. Returns <0 on failure.
int mp_set_avctx_codec_headers(AVCodecContext *avctx, struct mp_codec_params *c)
{
enum AVMediaType codec_type = avctx->codec_type;
enum AVCodecID codec_id = avctx->codec_id;
AVCodecParameters *avp = mp_codec_params_to_av(c);
if (!avp)
return -1;
int r = avcodec_parameters_to_context(avctx, avp) < 0 ? -1 : 0;
avcodec_parameters_free(&avp);
if (avctx->codec_type != AVMEDIA_TYPE_UNKNOWN)
avctx->codec_type = codec_type;
if (avctx->codec_id != AV_CODEC_ID_NONE)
avctx->codec_id = codec_id;
return r;
}
static int remove_extradata_init(AVBSFContext *ctx)
{
RemoveExtradataContext *s = ctx->priv_data;
int ret;
s->parser = av_parser_init(ctx->par_in->codec_id);
if (s->parser) {
s->avctx = avcodec_alloc_context3(NULL);
if (!s->avctx)
return AVERROR(ENOMEM);
ret = avcodec_parameters_to_context(s->avctx, ctx->par_in);
if (ret < 0)
return ret;
}
return 0;
}
static int mp_open_codec(struct mp_decode *d)
{
AVCodecContext *c;
int ret;
#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(57, 40, 101)
c = avcodec_alloc_context3(d->codec);
if (!c) {
blog(LOG_WARNING, "MP: Failed to allocate context");
return -1;
}
ret = avcodec_parameters_to_context(c, d->stream->codecpar);
if (ret < 0)
goto fail;
#else
c = d->stream->codec;
#endif
if (c->thread_count == 1 &&
c->codec_id != AV_CODEC_ID_PNG &&
c->codec_id != AV_CODEC_ID_TIFF &&
c->codec_id != AV_CODEC_ID_JPEG2000 &&
c->codec_id != AV_CODEC_ID_MPEG4 &&
c->codec_id != AV_CODEC_ID_WEBP)
c->thread_count = 0;
ret = avcodec_open2(c, d->codec, NULL);
if (ret < 0)
goto fail;
d->decoder = c;
return ret;
fail:
avcodec_close(c);
#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(57, 40, 101)
av_free(d->decoder);
#endif
return ret;
}
static int open_input_file(const char *filename)
{
int ret;
AVCodec *dec;
if ((ret = avformat_open_input(&fmt_ctx, filename, NULL, NULL)) < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot open input file\n");
return ret;
}
if ((ret = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot find stream information\n");
return ret;
}
/* select the audio stream */
ret = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_AUDIO, -1, -1, &dec, 0);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot find an audio stream in the input file\n");
return ret;
}
audio_stream_index = ret;
/* create decoding context */
dec_ctx = avcodec_alloc_context3(dec);
if (!dec_ctx)
return AVERROR(ENOMEM);
avcodec_parameters_to_context(dec_ctx, fmt_ctx->streams[audio_stream_index]->codecpar);
/* init the audio decoder */
if ((ret = avcodec_open2(dec_ctx, dec, NULL)) < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot open audio decoder\n");
return ret;
}
return 0;
}
int AudioWorks::init(const char* filename)
{
int ret = 0;
av_register_all();
/*open formatctx*/
ret = avformat_open_input(&formatCtx, filename, NULL, NULL);
if(ret < 0){
std::cout<<"avformat open failed!"<<std::endl;
return ret;
}
ret = avformat_find_stream_info(formatCtx, NULL);
if(ret < 0){
std::cout<<"find stream info failed!"<<std::endl;
return ret;
}
/*find audio stream index*/
int audioStreamIndex = av_find_best_stream(formatCtx, AVMEDIA_TYPE_AUDIO, -1, -1, NULL, 0);
if(audioStreamIndex < 0){
std::cout<<"can't find audio stream"<<std::endl;
return audioStreamIndex;
}
audioIndex = audioStreamIndex;
/*alloc audioCodecCtx and open it*/
audioCodecCtx = avcodec_alloc_context3(NULL);
if(audioCodecCtx == NULL){
std::cout<<"alloc AVCodecContext failed!"<<std::endl;
return -1;
}
ret = avcodec_parameters_to_context(audioCodecCtx, formatCtx->streams[audioStreamIndex]->codecpar);
/*find the decode type*/
AVCodec* codec = avcodec_find_decoder(audioCodecCtx->codec_id);
if(codec == NULL){
std::cout<<"find decoder failed!"<<std::endl;
return -1;
}
AVDictionary *opts = NULL;
av_dict_set(&opts, "refcounted_frames", "1", 0);
ret = avcodec_open2(audioCodecCtx, codec, &opts);
if(ret < 0){
std::cout<<"open audioCodecCtx failed!"<<std::endl;
return -1;
}
/*find video stream index*/
int videoStreamIndex = av_find_best_stream(formatCtx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
if(videoStreamIndex < 0){
std::cout<<"can't find video stream"<<std::endl;
return videoStreamIndex;
}
videoIndex = videoStreamIndex;
/*alloc audioCodecCtx and open it*/
videoCodecCtx = avcodec_alloc_context3(NULL);
if(videoCodecCtx == NULL){
std::cout<<"alloc AVCodecContext failed!"<<std::endl;
return -1;
}
ret = avcodec_parameters_to_context(videoCodecCtx, formatCtx->streams[videoStreamIndex]->codecpar);
/*find the decode type*/
AVCodec* vcodec = avcodec_find_decoder(videoCodecCtx->codec_id);
if(vcodec == NULL){
std::cout<<"find decoder failed!"<<std::endl;
return -1;
}
AVDictionary *vopts = NULL;
av_dict_set(&vopts, "refcounted_frames", "1", 0);
ret = avcodec_open2(videoCodecCtx, vcodec, &vopts);
if(ret < 0){
std::cout<<"open videoCodecCtx failed!"<<std::endl;
return -1;
}
return 0;
}
bool FFMpegLoader::open(qint64 &position) {
if (!AbstractFFMpegLoader::open(position)) {
return false;
}
int res = 0;
char err[AV_ERROR_MAX_STRING_SIZE] = { 0 };
auto codecParams = fmtContext->streams[streamId]->codecpar;
codecContext = avcodec_alloc_context3(nullptr);
if (!codecContext) {
LOG(("Audio Error: Unable to avcodec_alloc_context3 for file '%1', data size '%2'").arg(_file.name()).arg(_data.size()));
return false;
}
if ((res = avcodec_parameters_to_context(codecContext, codecParams)) < 0) {
LOG(("Audio Error: Unable to avcodec_parameters_to_context for file '%1', data size '%2', error %3, %4").arg(_file.name()).arg(_data.size()).arg(res).arg(av_make_error_string(err, sizeof(err), res)));
return false;
}
av_codec_set_pkt_timebase(codecContext, fmtContext->streams[streamId]->time_base);
av_opt_set_int(codecContext, "refcounted_frames", 1, 0);
if ((res = avcodec_open2(codecContext, codec, 0)) < 0) {
LOG(("Audio Error: Unable to avcodec_open2 for file '%1', data size '%2', error %3, %4").arg(_file.name()).arg(_data.size()).arg(res).arg(av_make_error_string(err, sizeof(err), res)));
return false;
}
auto layout = codecParams->channel_layout;
if (!layout) {
auto channelsCount = codecParams->channels;
switch (channelsCount) {
case 1: layout = AV_CH_LAYOUT_MONO; break;
case 2: layout = AV_CH_LAYOUT_STEREO; break;
default: LOG(("Audio Error: Unknown channel layout for %1 channels.").arg(channelsCount)); break;
}
}
inputFormat = codecContext->sample_fmt;
switch (layout) {
case AV_CH_LAYOUT_MONO:
switch (inputFormat) {
case AV_SAMPLE_FMT_U8:
case AV_SAMPLE_FMT_U8P: fmt = AL_FORMAT_MONO8; sampleSize = 1; break;
case AV_SAMPLE_FMT_S16:
case AV_SAMPLE_FMT_S16P: fmt = AL_FORMAT_MONO16; sampleSize = sizeof(uint16); break;
default:
sampleSize = -1; // convert needed
break;
}
break;
case AV_CH_LAYOUT_STEREO:
switch (inputFormat) {
case AV_SAMPLE_FMT_U8: fmt = AL_FORMAT_STEREO8; sampleSize = 2; break;
case AV_SAMPLE_FMT_S16: fmt = AL_FORMAT_STEREO16; sampleSize = 2 * sizeof(uint16); break;
default:
sampleSize = -1; // convert needed
break;
}
break;
default:
sampleSize = -1; // convert needed
break;
}
if (_samplesFrequency != 44100 && _samplesFrequency != 48000) {
sampleSize = -1; // convert needed
}
if (sampleSize < 0) {
swrContext = swr_alloc();
if (!swrContext) {
LOG(("Audio Error: Unable to swr_alloc for file '%1', data size '%2'").arg(_file.name()).arg(_data.size()));
return false;
}
int64_t src_ch_layout = layout, dst_ch_layout = AudioToChannelLayout;
srcRate = _samplesFrequency;
AVSampleFormat src_sample_fmt = inputFormat, dst_sample_fmt = AudioToFormat;
dstRate = (_samplesFrequency != 44100 && _samplesFrequency != 48000) ? Media::Player::kDefaultFrequency : _samplesFrequency;
av_opt_set_int(swrContext, "in_channel_layout", src_ch_layout, 0);
av_opt_set_int(swrContext, "in_sample_rate", srcRate, 0);
av_opt_set_sample_fmt(swrContext, "in_sample_fmt", src_sample_fmt, 0);
av_opt_set_int(swrContext, "out_channel_layout", dst_ch_layout, 0);
av_opt_set_int(swrContext, "out_sample_rate", dstRate, 0);
av_opt_set_sample_fmt(swrContext, "out_sample_fmt", dst_sample_fmt, 0);
if ((res = swr_init(swrContext)) < 0) {
LOG(("Audio Error: Unable to swr_init for file '%1', data size '%2', error %3, %4").arg(_file.name()).arg(_data.size()).arg(res).arg(av_make_error_string(err, sizeof(err), res)));
return false;
}
sampleSize = AudioToChannels * sizeof(short);
_samplesFrequency = dstRate;
_samplesCount = av_rescale_rnd(_samplesCount, dstRate, srcRate, AV_ROUND_UP);
position = av_rescale_rnd(position, dstRate, srcRate, AV_ROUND_DOWN);
fmt = AL_FORMAT_STEREO16;
maxResampleSamples = av_rescale_rnd(AVBlockSize / sampleSize, dstRate, srcRate, AV_ROUND_UP);
if ((res = av_samples_alloc_array_and_samples(&dstSamplesData, 0, AudioToChannels, maxResampleSamples, AudioToFormat, 0)) < 0) {
LOG(("Audio Error: Unable to av_samples_alloc for file '%1', data size '%2', error %3, %4").arg(_file.name()).arg(_data.size()).arg(res).arg(av_make_error_string(err, sizeof(err), res)));
return false;
}
}
if (position) {
int64 ts = (position * fmtContext->streams[streamId]->time_base.den) / (_samplesFrequency * fmtContext->streams[streamId]->time_base.num);
if (av_seek_frame(fmtContext, streamId, ts, AVSEEK_FLAG_ANY) < 0) {
if (av_seek_frame(fmtContext, streamId, ts, 0) < 0) {
}
}
}
return true;
}
bool CFFmpegImage::Initialize(unsigned char* buffer, size_t bufSize)
{
int bufferSize = 4096;
uint8_t* fbuffer = (uint8_t*)av_malloc(bufferSize + AV_INPUT_BUFFER_PADDING_SIZE);
if (!fbuffer)
{
CLog::LogF(LOGERROR, "Could not allocate buffer");
return false;
}
m_buf.data = buffer;
m_buf.size = bufSize;
m_buf.pos = 0;
m_ioctx = avio_alloc_context(fbuffer, bufferSize, 0, &m_buf,
mem_file_read, NULL, mem_file_seek);
if (!m_ioctx)
{
av_free(fbuffer);
CLog::LogF(LOGERROR, "Could not allocate AVIOContext");
return false;
}
// signal to ffmepg this is not streaming protocol
m_ioctx->max_packet_size = bufferSize;
m_fctx = avformat_alloc_context();
if (!m_fctx)
{
FreeIOCtx(&m_ioctx);
CLog::LogF(LOGERROR, "Could not allocate AVFormatContext");
return false;
}
m_fctx->pb = m_ioctx;
// Some clients have pngs saved as jpeg or ask us for png but are jpeg
// mythv throws all mimetypes away and asks us with application/octet-stream
// this is poor man's fallback to at least identify png / jpeg
bool is_jpeg = (bufSize > 2 && buffer[0] == 0xFF && buffer[1] == 0xD8 && buffer[2] == 0xFF);
bool is_png = (bufSize > 3 && buffer[1] == 'P' && buffer[2] == 'N' && buffer[3] == 'G');
bool is_tiff = (bufSize > 2 && buffer[0] == 'I' && buffer[1] == 'I' && buffer[2] == '*');
AVInputFormat* inp = nullptr;
if (is_jpeg)
inp = av_find_input_format("jpeg_pipe");
else if (m_strMimeType == "image/apng")
inp = av_find_input_format("apng");
else if (is_png)
inp = av_find_input_format("png_pipe");
else if (is_tiff)
inp = av_find_input_format("tiff_pipe");
else if (m_strMimeType == "image/jp2")
inp = av_find_input_format("j2k_pipe");
else if (m_strMimeType == "image/webp")
inp = av_find_input_format("webp_pipe");
// brute force parse if above check already failed
else if (m_strMimeType == "image/jpeg" || m_strMimeType == "image/jpg")
inp = av_find_input_format("jpeg_pipe");
else if (m_strMimeType == "image/png")
inp = av_find_input_format("png_pipe");
else if (m_strMimeType == "image/tiff")
inp = av_find_input_format("tiff_pipe");
else if (m_strMimeType == "image/gif")
inp = av_find_input_format("gif");
if (avformat_open_input(&m_fctx, NULL, inp, NULL) < 0)
{
CLog::Log(LOGERROR, "Could not find suitable input format: %s", m_strMimeType.c_str());
avformat_close_input(&m_fctx);
FreeIOCtx(&m_ioctx);
return false;
}
if (m_fctx->nb_streams <= 0)
{
avformat_close_input(&m_fctx);
FreeIOCtx(&m_ioctx);
return false;
}
AVCodecParameters* codec_params = m_fctx->streams[0]->codecpar;
AVCodec* codec = avcodec_find_decoder(codec_params->codec_id);
m_codec_ctx = avcodec_alloc_context3(codec);
if (!m_codec_ctx)
{
avformat_close_input(&m_fctx);
FreeIOCtx(&m_ioctx);
return false;
}
if (avcodec_parameters_to_context(m_codec_ctx, codec_params) < 0)
{
avformat_close_input(&m_fctx);
avcodec_free_context(&m_codec_ctx);
FreeIOCtx(&m_ioctx);
return false;
}
if (avcodec_open2(m_codec_ctx, codec, NULL) < 0)
{
avformat_close_input(&m_fctx);
avcodec_free_context(&m_codec_ctx);
FreeIOCtx(&m_ioctx);
return false;
}
return true;
}
/**
* Open an input file and the required decoder.
* @param filename File to be opened
* @param[out] input_format_context Format context of opened file
* @param[out] input_codec_context Codec context of opened file
* @return Error code (0 if successful)
*/
int Transcode::open_input_file(const char *filename,
AVFormatContext **input_format_context,
AVCodecContext **input_codec_context)
{
AVCodecContext *avctx;
AVCodec *input_codec;
int error;
/* Open the input file to read from it. */
if ((error = avformat_open_input(input_format_context, filename, NULL,
NULL)) < 0) {
fprintf(stderr, "Could not open input file '%s' (error '%s')\n",
filename, av_cplus_err2str(error));
*input_format_context = NULL;
return error;
}
/* Get information on the input file (number of streams etc.). */
if ((error = avformat_find_stream_info(*input_format_context, NULL)) < 0) {
fprintf(stderr, "Could not open find stream info (error '%s')\n",
av_cplus_err2str(error));
avformat_close_input(input_format_context);
return error;
}
/* Make sure that there is only one stream in the input file. */
if ((*input_format_context)->nb_streams != 1) {
fprintf(stderr, "Expected one audio input stream, but found %d\n",
(*input_format_context)->nb_streams);
avformat_close_input(input_format_context);
return AVERROR_EXIT;
}
/* Find a decoder for the audio stream. */
if (!(input_codec = avcodec_find_decoder((*input_format_context)->streams[0]->codecpar->codec_id))) {
fprintf(stderr, "Could not find input codec\n");
avformat_close_input(input_format_context);
return AVERROR_EXIT;
}
/* Allocate a new decoding context. */
avctx = avcodec_alloc_context3(input_codec);
if (!avctx) {
fprintf(stderr, "Could not allocate a decoding context\n");
avformat_close_input(input_format_context);
return AVERROR(ENOMEM);
}
/* Initialize the stream parameters with demuxer information. */
error = avcodec_parameters_to_context(avctx, (*input_format_context)->streams[0]->codecpar);
if (error < 0) {
avformat_close_input(input_format_context);
avcodec_free_context(&avctx);
return error;
}
/* Open the decoder for the audio stream to use it later. */
if ((error = avcodec_open2(avctx, input_codec, NULL)) < 0) {
fprintf(stderr, "Could not open input codec (error '%s')\n",
av_cplus_err2str(error));
avcodec_free_context(&avctx);
avformat_close_input(input_format_context);
return error;
}
/* Save the decoder context for easier access later. */
*input_codec_context = avctx;
return 0;
}
static int alloc(struct vidsrc_st **stp, const struct vidsrc *vs,
struct media_ctx **mctx, struct vidsrc_prm *prm,
const struct vidsz *size, const char *fmt,
const char *dev, vidsrc_frame_h *frameh,
vidsrc_error_h *errorh, void *arg)
{
#if LIBAVFORMAT_VERSION_INT < ((52<<16) + (110<<8) + 0)
AVFormatParameters prms;
#endif
struct vidsrc_st *st;
bool found_stream = false;
uint32_t i;
int ret, err = 0;
int input_fps = 0;
(void)mctx;
(void)errorh;
if (!stp || !vs || !prm || !size || !frameh)
return EINVAL;
st = mem_zalloc(sizeof(*st), destructor);
if (!st)
return ENOMEM;
st->vs = vs;
st->sz = *size;
st->frameh = frameh;
st->arg = arg;
st->fps = prm->fps;
/*
* avformat_open_input() was added in lavf 53.2.0 according to
* ffmpeg/doc/APIchanges
*/
#if LIBAVFORMAT_VERSION_INT >= ((52<<16) + (110<<8) + 0)
(void)fmt;
ret = avformat_open_input(&st->ic, dev, NULL, NULL);
#else
/* Params */
memset(&prms, 0, sizeof(prms));
prms.time_base = (AVRational){1, prm->fps};
prms.channels = 1;
prms.width = size->w;
prms.height = size->h;
prms.pix_fmt = AV_PIX_FMT_YUV420P;
prms.channel = 0;
ret = av_open_input_file(&st->ic, dev, av_find_input_format(fmt),
0, &prms);
#endif
if (ret < 0) {
err = ENOENT;
goto out;
}
#if LIBAVFORMAT_VERSION_INT >= ((53<<16) + (4<<8) + 0)
ret = avformat_find_stream_info(st->ic, NULL);
#else
ret = av_find_stream_info(st->ic);
#endif
if (ret < 0) {
warning("avformat: %s: no stream info\n", dev);
err = ENOENT;
goto out;
}
#if 0
dump_format(st->ic, 0, dev, 0);
#endif
for (i=0; i<st->ic->nb_streams; i++) {
const struct AVStream *strm = st->ic->streams[i];
AVCodecContext *ctx;
double dfps;
#if LIBAVFORMAT_VERSION_INT >= ((57<<16) + (33<<8) + 100)
ctx = avcodec_alloc_context3(NULL);
if (!ctx) {
err = ENOMEM;
goto out;
}
ret = avcodec_parameters_to_context(ctx, strm->codecpar);
if (ret < 0) {
warning("avformat: avcodec_parameters_to_context\n");
err = EPROTO;
goto out;
}
#else
ctx = strm->codec;
#endif
if (ctx->codec_type != AVMEDIA_TYPE_VIDEO)
continue;
debug("avformat: stream %u: %u x %u "
" time_base=%d/%d\n",
i, ctx->width, ctx->height,
strm->time_base.num, strm->time_base.den);
st->sz.w = ctx->width;
st->sz.h = ctx->height;
st->ctx = ctx;
st->sindex = strm->index;
st->time_base = strm->time_base;
dfps = av_q2d(strm->avg_frame_rate);
input_fps = (int)dfps;
if (st->fps != input_fps) {
info("avformat: updating %i fps from config to native "
"input material fps %i\n", st->fps, input_fps);
st->fps = input_fps;
#if LIBAVFORMAT_VERSION_INT < ((52<<16) + (110<<8) + 0)
prms.time_base = (AVRational){1, st->fps};
#endif
}
if (ctx->codec_id != AV_CODEC_ID_NONE) {
st->codec = avcodec_find_decoder(ctx->codec_id);
if (!st->codec) {
err = ENOENT;
goto out;
}
#if LIBAVCODEC_VERSION_INT >= ((53<<16)+(8<<8)+0)
ret = avcodec_open2(ctx, st->codec, NULL);
#else
ret = avcodec_open(ctx, st->codec);
#endif
if (ret < 0) {
err = ENOENT;
goto out;
}
}
found_stream = true;
break;
}
if (!found_stream) {
err = ENOENT;
goto out;
}
st->run = true;
err = pthread_create(&st->thread, NULL, read_thread, st);
if (err) {
st->run = false;
goto out;
}
out:
if (err)
mem_deref(st);
else
*stp = st;
return err;
}
static int open_input_file(InputFile *ifile, const char *filename)
{
int err, i;
AVFormatContext *fmt_ctx = NULL;
AVDictionaryEntry *t;
if ((err = avformat_open_input(&fmt_ctx, filename,
iformat, &format_opts)) < 0) {
print_error(filename, err);
return err;
}
if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
return AVERROR_OPTION_NOT_FOUND;
}
/* fill the streams in the format context */
if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
print_error(filename, err);
return err;
}
av_dump_format(fmt_ctx, 0, filename, 0);
ifile->streams = av_mallocz_array(fmt_ctx->nb_streams,
sizeof(*ifile->streams));
if (!ifile->streams)
exit(1);
ifile->nb_streams = fmt_ctx->nb_streams;
/* bind a decoder to each input stream */
for (i = 0; i < fmt_ctx->nb_streams; i++) {
InputStream *ist = &ifile->streams[i];
AVStream *stream = fmt_ctx->streams[i];
AVCodec *codec;
ist->st = stream;
if (stream->codecpar->codec_id == AV_CODEC_ID_PROBE) {
fprintf(stderr, "Failed to probe codec for input stream %d\n",
stream->index);
continue;
}
codec = avcodec_find_decoder(stream->codecpar->codec_id);
if (!codec) {
fprintf(stderr,
"Unsupported codec with id %d for input stream %d\n",
stream->codecpar->codec_id, stream->index);
continue;
}
ist->dec_ctx = avcodec_alloc_context3(codec);
if (!ist->dec_ctx)
exit(1);
err = avcodec_parameters_to_context(ist->dec_ctx, stream->codecpar);
if (err < 0)
exit(1);
err = avcodec_open2(ist->dec_ctx, NULL, NULL);
if (err < 0) {
fprintf(stderr, "Error while opening codec for input stream %d\n",
stream->index);
exit(1);
}
}
ifile->fmt_ctx = fmt_ctx;
return 0;
}
int fe_decode_open(char *filename) {
int i = -1;
AVDictionary *l_iFormatOpts = NULL;
printf("fe_decode_open: Decode audio file %s\n",
filename);
m_pFormatCtx = avformat_alloc_context();
// Enable this to use old slow MP3 Xing TOC
#ifndef CODEC_ID_MP3
if ( LIBAVFORMAT_VERSION_INT > 3540580 ) {
printf("fe_decode_open: Set usetoc to have old way of XING TOC reading (libavformat version: '%d')\n", LIBAVFORMAT_VERSION_INT);
av_dict_set(&l_iFormatOpts, "usetoc", "0", 0);
}
#endif
// Open file and make m_pFormatCtx
if (avformat_open_input(&m_pFormatCtx, filename, NULL, &l_iFormatOpts) != 0) {
printf("fe_decode_open: cannot open with 'avformat_open_input': %s\n",
filename);
return -1;
}
#ifndef CODEC_ID_MP3
if ( LIBAVFORMAT_VERSION_INT > 3540580 && l_iFormatOpts != NULL ) {
av_dict_free(&l_iFormatOpts);
}
#endif
#if LIBAVCODEC_VERSION_INT < 3622144
m_pFormatCtx->max_analyze_duration = 999999999;
#endif
// Retrieve stream information
if (avformat_find_stream_info(m_pFormatCtx, NULL) < 0) {
printf("fe_decode_open: cannot open find info '%s'\n",
filename);
printf("As documentation says this is pretty normal. So this not show stopper!\n");
}
av_dump_format(m_pFormatCtx, 0, filename, 0);
// Find the first video stream
m_iAudioStream = -1;
printf("fe_decode_open: File got streams: %d\n", m_pFormatCtx->nb_streams);
for (i = 0; i < m_pFormatCtx->nb_streams; i++) {
// If we have FFMpeg version which is less than 3.2 then we use older implementation
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(57, 48, 0)
if (m_pFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
#else
if (m_pFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
#endif
m_iAudioStream = i;
break;
}
}
if (m_iAudioStream == -1) {
printf("fe_decode_open: cannot find an audio stream: cannot open %s",
filename);
return -1;
}
// Find the decoder for the audio stream
// If we have FFMpeg version which is less than 3.2 then we use older implementation
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(57, 48, 0)
if (!(m_pCodec = avcodec_find_decoder(m_pFormatCtx->streams[m_iAudioStream]->codec_id))) {
#else
if (!(m_pCodec = avcodec_find_decoder(m_pFormatCtx->streams[m_iAudioStream]->codecpar->codec_id))) {
#endif
printf("fe_decode_open: cannot find a decoder for %s\n",
filename);
return -1;
}
// If we have FFMpeg version which is less than 3.2 then we use older implementation
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(57, 48, 0)
// Get a pointer to the codec context for the video stream
m_pCodecCtx = m_pFormatCtx->streams[m_iAudioStream]->codec;
#else
// Get a pointer to the codec context for the video stream
//m_pCodecCtx = avcodec_alloc_context3(m_pCodec);
m_pCodecCtx = avcodec_alloc_context3(NULL);
// Add stream parameters to context
if(avcodec_parameters_to_context(m_pCodecCtx, m_pFormatCtx->streams[m_iAudioStream]->codecpar)) {
printf("fe_decode_open: cannot add Codec parameters: %s\n",
filename);
return -1;
}
// This is not needed anymore above FFMpeg version 4.0
#if LIBAVCODEC_VERSION_INT < 3805796
// Se timebase correct
av_codec_set_pkt_timebase(m_pCodecCtx, m_pFormatCtx->streams[m_iAudioStream]->time_base);
#endif
// Make sure that Codecs are identical or avcodec_open2 fails.
m_pCodecCtx->codec_id = m_pCodec->id;
#endif
if(!m_pCodecCtx) {
printf("fe_decode_open: cannot get 'AVCodecContext'\n");
return -1;
}
if (avcodec_open2(m_pCodecCtx, m_pCodec, NULL) < 0) {
printf("fe_decode_open: cannot open with 'avcodec_open2' codec_id: %d Audio stream id: %d: %s\n",
m_pFormatCtx->streams[m_iAudioStream]->codecpar->codec_id,
m_iAudioStream, filename
);
return -1;
}
printf("fe_decode_open: PCM Length is: %f (Bytes: %ld)\n",
(double)(m_pFormatCtx->duration / AV_TIME_BASE),
(int64_t)round((double)(m_pFormatCtx->duration / AV_TIME_BASE) * (44100 * 4)));
m_lPcmLength = (int64_t)round((double)(m_pFormatCtx->duration / AV_TIME_BASE) * (44100 * 4));
return 0;
}
static int video_decode_example(const char *input_filename)
{
AVCodec *codec = NULL;
AVCodecContext *ctx= NULL;
AVCodecParameters *origin_par = NULL;
AVFrame *fr = NULL;
uint8_t *byte_buffer = NULL;
AVPacket pkt;
AVFormatContext *fmt_ctx = NULL;
int number_of_written_bytes;
int video_stream;
int got_frame = 0;
int byte_buffer_size;
int i = 0;
int result;
int end_of_stream = 0;
result = avformat_open_input(&fmt_ctx, input_filename, NULL, NULL);
if (result < 0) {
av_log(NULL, AV_LOG_ERROR, "Can't open file\n");
return result;
}
result = avformat_find_stream_info(fmt_ctx, NULL);
if (result < 0) {
av_log(NULL, AV_LOG_ERROR, "Can't get stream info\n");
return result;
}
video_stream = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
if (video_stream < 0) {
av_log(NULL, AV_LOG_ERROR, "Can't find video stream in input file\n");
return -1;
}
origin_par = fmt_ctx->streams[video_stream]->codecpar;
codec = avcodec_find_decoder(origin_par->codec_id);
if (!codec) {
av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n");
return -1;
}
ctx = avcodec_alloc_context3(codec);
if (!ctx) {
av_log(NULL, AV_LOG_ERROR, "Can't allocate decoder context\n");
return AVERROR(ENOMEM);
}
result = avcodec_parameters_to_context(ctx, origin_par);
if (result) {
av_log(NULL, AV_LOG_ERROR, "Can't copy decoder context\n");
return result;
}
result = avcodec_open2(ctx, codec, NULL);
if (result < 0) {
av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n");
return result;
}
fr = av_frame_alloc();
if (!fr) {
av_log(NULL, AV_LOG_ERROR, "Can't allocate frame\n");
return AVERROR(ENOMEM);
}
byte_buffer_size = av_image_get_buffer_size(ctx->pix_fmt, ctx->width, ctx->height, 16);
byte_buffer = av_malloc(byte_buffer_size);
if (!byte_buffer) {
av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n");
return AVERROR(ENOMEM);
}
printf("#tb %d: %d/%d\n", video_stream, fmt_ctx->streams[video_stream]->time_base.num, fmt_ctx->streams[video_stream]->time_base.den);
i = 0;
av_init_packet(&pkt);
do {
if (!end_of_stream)
if (av_read_frame(fmt_ctx, &pkt) < 0)
end_of_stream = 1;
if (end_of_stream) {
pkt.data = NULL;
pkt.size = 0;
}
if (pkt.stream_index == video_stream || end_of_stream) {
got_frame = 0;
if (pkt.pts == AV_NOPTS_VALUE)
pkt.pts = pkt.dts = i;
result = avcodec_decode_video2(ctx, fr, &got_frame, &pkt);
if (result < 0) {
av_log(NULL, AV_LOG_ERROR, "Error decoding frame\n");
return result;
}
if (got_frame) {
number_of_written_bytes = av_image_copy_to_buffer(byte_buffer, byte_buffer_size,
(const uint8_t* const *)fr->data, (const int*) fr->linesize,
ctx->pix_fmt, ctx->width, ctx->height, 1);
if (number_of_written_bytes < 0) {
av_log(NULL, AV_LOG_ERROR, "Can't copy image to buffer\n");
return number_of_written_bytes;
}
printf("%d, %10"PRId64", %10"PRId64", %8"PRId64", %8d, 0x%08lx\n", video_stream,
fr->pts, fr->pkt_dts, fr->pkt_duration,
number_of_written_bytes, av_adler32_update(0, (const uint8_t*)byte_buffer, number_of_written_bytes));
}
av_packet_unref(&pkt);
av_init_packet(&pkt);
}
i++;
} while (!end_of_stream || got_frame);
av_packet_unref(&pkt);
av_frame_free(&fr);
avcodec_close(ctx);
avformat_close_input(&fmt_ctx);
avcodec_free_context(&ctx);
av_freep(&byte_buffer);
return 0;
}
static av_cold int movie_init(AVFilterContext *ctx)
{
MovieContext *movie = ctx->priv;
AVInputFormat *iformat = NULL;
AVStream *st;
AVCodec *codec;
int ret;
int64_t timestamp;
av_register_all();
// Try to find the movie format (container)
iformat = movie->format_name ? av_find_input_format(movie->format_name) : NULL;
movie->format_ctx = NULL;
if ((ret = avformat_open_input(&movie->format_ctx, movie->file_name, iformat, NULL)) < 0) {
av_log(ctx, AV_LOG_ERROR,
"Failed to avformat_open_input '%s'\n", movie->file_name);
return ret;
}
if ((ret = avformat_find_stream_info(movie->format_ctx, NULL)) < 0)
av_log(ctx, AV_LOG_WARNING, "Failed to find stream info\n");
// if seeking requested, we execute it
if (movie->seek_point > 0) {
timestamp = movie->seek_point;
// add the stream start time, should it exist
if (movie->format_ctx->start_time != AV_NOPTS_VALUE) {
if (timestamp > INT64_MAX - movie->format_ctx->start_time) {
av_log(ctx, AV_LOG_ERROR,
"%s: seek value overflow with start_time:%"PRId64" seek_point:%"PRId64"\n",
movie->file_name, movie->format_ctx->start_time, movie->seek_point);
return AVERROR(EINVAL);
}
timestamp += movie->format_ctx->start_time;
}
if ((ret = av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD)) < 0) {
av_log(ctx, AV_LOG_ERROR, "%s: could not seek to position %"PRId64"\n",
movie->file_name, timestamp);
return ret;
}
}
/* select the video stream */
if ((ret = av_find_best_stream(movie->format_ctx, AVMEDIA_TYPE_VIDEO,
movie->stream_index, -1, NULL, 0)) < 0) {
av_log(ctx, AV_LOG_ERROR, "No video stream with index '%d' found\n",
movie->stream_index);
return ret;
}
movie->stream_index = ret;
st = movie->format_ctx->streams[movie->stream_index];
/*
* So now we've got a pointer to the so-called codec context for our video
* stream, but we still have to find the actual codec and open it.
*/
codec = avcodec_find_decoder(st->codecpar->codec_id);
if (!codec) {
av_log(ctx, AV_LOG_ERROR, "Failed to find any codec\n");
return AVERROR(EINVAL);
}
movie->codec_ctx = avcodec_alloc_context3(codec);
if (!movie->codec_ctx)
return AVERROR(ENOMEM);
ret = avcodec_parameters_to_context(movie->codec_ctx, st->codecpar);
if (ret < 0)
return ret;
movie->codec_ctx->refcounted_frames = 1;
if ((ret = avcodec_open2(movie->codec_ctx, codec, NULL)) < 0) {
av_log(ctx, AV_LOG_ERROR, "Failed to open codec\n");
return ret;
}
movie->w = movie->codec_ctx->width;
movie->h = movie->codec_ctx->height;
av_log(ctx, AV_LOG_VERBOSE, "seek_point:%"PRIi64" format_name:%s file_name:%s stream_index:%d\n",
movie->seek_point, movie->format_name, movie->file_name,
movie->stream_index);
return 0;
}
avcodec_decoder avcodec_decoder_create(const opencv_mat buf) {
avcodec_decoder d = new struct avcodec_decoder_struct();
memset(d, 0, sizeof(struct avcodec_decoder_struct));
d->mat = static_cast<const cv::Mat *>(buf);
d->container = avformat_alloc_context();
if (!d->container) {
avcodec_decoder_release(d);
return NULL;
}
d->avio = avio_alloc_context(NULL, 0, 0, d, avcodec_decoder_read_callback,
NULL, avcodec_decoder_seek_callback);
if (!d->avio) {
avcodec_decoder_release(d);
return NULL;
}
d->container->pb = d->avio;
int res = avformat_open_input(&d->container, NULL, NULL, NULL);
if (res < 0) {
avformat_free_context(d->container);
d->container = NULL;
avcodec_decoder_release(d);
return NULL;
}
res = avformat_find_stream_info(d->container, NULL);
if (res < 0) {
avcodec_decoder_release(d);
return NULL;
}
if (avcodec_decoder_is_audio(d)) {
// in this case, quit out fast since we won't be decoding this anyway
// (audio is metadata-only)
return d;
}
AVCodecParameters *codec_params = NULL;
for (int i = 0; i < d->container->nb_streams; i++) {
if (d->container->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
codec_params = d->container->streams[i]->codecpar;
d->video_stream_index = i;
break;
}
}
if (!codec_params) {
avcodec_decoder_release(d);
return NULL;
}
AVCodec *codec = avcodec_find_decoder(codec_params->codec_id);
if (!codec) {
avcodec_decoder_release(d);
return NULL;
}
d->codec = avcodec_alloc_context3(codec);
res = avcodec_parameters_to_context(d->codec, codec_params);
if (res < 0) {
avcodec_decoder_release(d);
return NULL;
}
res = avcodec_open2(d->codec, codec, NULL);
if (res < 0) {
avcodec_decoder_release(d);
return NULL;
}
return d;
}
/* "user interface" functions */
static void dump_stream_format(AVFormatContext *ic, int i,
int index, int is_output)
{
char buf[256];
int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
AVStream *st = ic->streams[i];
AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
char *separator = ic->dump_separator;
AVCodecContext *avctx;
int ret;
avctx = avcodec_alloc_context3(NULL);
if (!avctx)
return;
ret = avcodec_parameters_to_context(avctx, st->codecpar);
if (ret < 0) {
avcodec_free_context(&avctx);
return;
}
// Fields which are missing from AVCodecParameters need to be taken from the AVCodecContext
avctx->properties = st->codec->properties;
avctx->codec = st->codec->codec;
avctx->qmin = st->codec->qmin;
avctx->qmax = st->codec->qmax;
avctx->coded_width = st->codec->coded_width;
avctx->coded_height = st->codec->coded_height;
if (separator)
av_opt_set(avctx, "dump_separator", separator, 0);
avcodec_string(buf, sizeof(buf), avctx, is_output);
avcodec_free_context(&avctx);
av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
/* the pid is an important information, so we display it */
/* XXX: add a generic system */
if (flags & AVFMT_SHOW_IDS)
av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
if (lang)
av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames,
st->time_base.num, st->time_base.den);
av_log(NULL, AV_LOG_INFO, ": %s", buf);
if (st->sample_aspect_ratio.num &&
av_cmp_q(st->sample_aspect_ratio, st->codecpar->sample_aspect_ratio)) {
AVRational display_aspect_ratio;
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
st->codecpar->width * (int64_t)st->sample_aspect_ratio.num,
st->codecpar->height * (int64_t)st->sample_aspect_ratio.den,
1024 * 1024);
av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
display_aspect_ratio.num, display_aspect_ratio.den);
}
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
int fps = st->avg_frame_rate.den && st->avg_frame_rate.num;
int tbr = st->r_frame_rate.den && st->r_frame_rate.num;
int tbn = st->time_base.den && st->time_base.num;
int tbc = st->codec->time_base.den && st->codec->time_base.num;
if (fps || tbr || tbn || tbc)
av_log(NULL, AV_LOG_INFO, "%s", separator);
if (fps)
print_fps(av_q2d(st->avg_frame_rate), tbr || tbn || tbc ? "fps, " : "fps");
if (tbr)
print_fps(av_q2d(st->r_frame_rate), tbn || tbc ? "tbr, " : "tbr");
if (tbn)
print_fps(1 / av_q2d(st->time_base), tbc ? "tbn, " : "tbn");
if (tbc)
print_fps(1 / av_q2d(st->codec->time_base), "tbc");
}
if (st->disposition & AV_DISPOSITION_DEFAULT)
av_log(NULL, AV_LOG_INFO, " (default)");
if (st->disposition & AV_DISPOSITION_DUB)
av_log(NULL, AV_LOG_INFO, " (dub)");
if (st->disposition & AV_DISPOSITION_ORIGINAL)
av_log(NULL, AV_LOG_INFO, " (original)");
if (st->disposition & AV_DISPOSITION_COMMENT)
av_log(NULL, AV_LOG_INFO, " (comment)");
if (st->disposition & AV_DISPOSITION_LYRICS)
av_log(NULL, AV_LOG_INFO, " (lyrics)");
if (st->disposition & AV_DISPOSITION_KARAOKE)
av_log(NULL, AV_LOG_INFO, " (karaoke)");
if (st->disposition & AV_DISPOSITION_FORCED)
av_log(NULL, AV_LOG_INFO, " (forced)");
if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
av_log(NULL, AV_LOG_INFO, " (visual impaired)");
if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
av_log(NULL, AV_LOG_INFO, " (clean effects)");
if (st->disposition & AV_DISPOSITION_DESCRIPTIONS)
av_log(NULL, AV_LOG_INFO, " (descriptions)");
if (st->disposition & AV_DISPOSITION_DEPENDENT)
av_log(NULL, AV_LOG_INFO, " (dependent)");
av_log(NULL, AV_LOG_INFO, "\n");
dump_metadata(NULL, st->metadata, " ");
dump_sidedata(NULL, st, " ");
}
int main(int argc, char *argv[]) {
AVFormatContext *pFormatCtx = NULL;
int i, videoStream;
AVCodecContext *pCodecCtx = NULL;
AVCodecParameters *pCodecParam = NULL;
AVCodec *pCodec = NULL;
AVFrame *pFrame = NULL;
AVPacket packet;
int send_packet, receive_frame;
//float aspect_ratio;
AVFrame *pict;
/*
std::unique_ptr<AVFrame, std::function<void(AVFrame*)>> frame_converted{
av_frame_alloc(),
[](AVFrame* f){ av_free(f->data[0]); } };
if (av_frame_copy_props(frame_converted.get(),
frame_decoded.get()) < 0) {
throw std::runtime_error("Copying frame properties");
}
if (av_image_alloc(
frame_converted->data, frame_converted->linesize,
video_decoder_->width(), video_decoder_->height(),
video_decoder_->pixel_format(), 1) < 0) {
throw std::runtime_error("Allocating picture");
}
*/
AVDictionary *optionsDict = NULL;
struct SwsContext *sws_ctx = NULL;
SDL_Texture* pTexture = nullptr;
SDL_Window* pWindows = nullptr;
SDL_Renderer* pRenderer = nullptr;
SDL_Event event;
if (argc < 2) {
fprintf(stderr, "Usage: test <file>\n");
exit(1);
}
// Register all formats and codecs
av_register_all();
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER)) {
fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
exit(1);
}
// Open video file
if (avformat_open_input(&pFormatCtx, argv[1], NULL, NULL) != 0)
return -1; // Couldn't open file
// Retrieve stream information
if (avformat_find_stream_info(pFormatCtx, NULL)<0)
return -1; // Couldn't find stream information
// Dump information about file onto standard error
av_dump_format(pFormatCtx, 0, argv[1], 0);
// Find the first video stream
videoStream = -1;
for (i = 0; i<pFormatCtx->nb_streams; i++)
if (pFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
videoStream = i;
break;
}
if (videoStream == -1)
return -1; // Didn't find a video stream
// Get a pointer to the codec context for the video stream
//AVCodecContext *codec is deprecated,so use the codecpar struct (AVCodecParameters) instead.
pCodecParam = pFormatCtx->streams[videoStream]->codecpar;
//but function avcodec_open2() need pCodecCtx,so copy (AVCodecParameters) pCodecParam to (AVCodecContext) pCodecCtx
pCodec = avcodec_find_decoder(pCodecParam->codec_id);
// Find the decoder for the video stream
if (pCodec == NULL) {
fprintf(stderr, "Unsupported codec!\n");
return -1; // Codec not found
}
pCodecCtx = avcodec_alloc_context3(pCodec);
avcodec_parameters_to_context(pCodecCtx, pCodecParam);
// Open codec
if (avcodec_open2(pCodecCtx, pCodec, &optionsDict)<0)
return -1; // Could not open codec
// Allocate video frame
pFrame = av_frame_alloc();
// Make a screen to put our video
#ifndef __DARWIN__
pWindows = SDL_CreateWindow(argv[1],SDL_WINDOWPOS_CENTERED,SDL_WINDOWPOS_CENTERED,pCodecParam->width, pCodecParam->height,SDL_WINDOW_BORDERLESS|SDL_WINDOW_RESIZABLE);
#else
screen = SDL_SetVideoMode(pCodecParam->width, pCodecParam->height, 24, 0);
#endif
if (!pWindows) {
fprintf(stderr, "SDL: could not set video mode - exiting\n");
exit(1);
}
// Allocate a place to put our YUV image on that screen
pRenderer = SDL_CreateRenderer(pWindows, -1, 0);
if (!pRenderer) {
fprintf(stderr, "SDL: could not create renderer - exiting\n");
exit(1);
}
pTexture = SDL_CreateTexture(pRenderer, SDL_PIXELFORMAT_YV12, SDL_TEXTUREACCESS_STREAMING, pCodecParam->width, pCodecParam->height);
sws_ctx =
sws_getContext
(
pCodecParam->width,
pCodecParam->height,
(AVPixelFormat)pCodecParam->format,
pCodecParam->width,
pCodecParam->height,
AV_PIX_FMT_YUV420P,
SWS_BILINEAR,
NULL,
NULL,
NULL
);
pict = av_frame_alloc();
if (pict == nullptr){
exit(1);
}
if (av_image_alloc(pict->data, pict->linesize,
pCodecParam->width, pCodecParam->height,
(AVPixelFormat)pCodecParam->format, 1) < 0){
exit(1);
}
// Read frames and save first five frames to disk
i = 0;
while (av_read_frame(pFormatCtx, &packet) >= 0) {
// Is this a packet from the video stream?
if (packet.stream_index == videoStream) {
// Decode video frame
//avcodec_decode_video2 is deprecated Use avcodec_send_packet() and avcodec_receive_frame().
send_packet = avcodec_send_packet(pCodecCtx, &packet);
receive_frame = avcodec_receive_frame(pCodecCtx, pFrame);
// Did we get a video frame?
if (send_packet == SEND_PACKET_SUCCESS && receive_frame == RECEIVE_FRAME_SUCCESS) {
//SDL_LockYUVOverlay(bmp);
//SDL_LockTexture(pTexture,NULL,);
// Convert the image into YUV format that SDL uses
if (av_frame_copy_props(pFrame,
pict) < 0) {
exit(1);
}
sws_scale
(
sws_ctx,
pFrame->data,
pFrame->linesize,
0,
pCodecParam->height,
pict->data,
pict->linesize
);
//SDL_UnlockYUVOverlay(bmp);
SDL_UpdateYUVTexture(pTexture, NULL, pict->data[0], pict->linesize[0], pict->data[1], pict->linesize[1], pict->data[2], pict->linesize[2]);
SDL_RenderCopy(pRenderer, pTexture, NULL, NULL);
SDL_RenderPresent(pRenderer);
}
}
// Free the packet that was allocated by av_read_frame
av_packet_unref(&packet);
SDL_PollEvent(&event);
switch (event.type) {
case SDL_QUIT:
SDL_DestroyRenderer(pRenderer);
SDL_DestroyTexture(pTexture);
SDL_DestroyWindow(pWindows);
SDL_Quit();
exit(0);
break;
default:
break;
}
}
// Free the YUV frame
av_frame_free(&pFrame);
//free pict
av_freep(&pict->data[0]);
av_frame_free(&pict);
// Close the codec
avcodec_close(pCodecCtx);
// Close the video file
avformat_close_input(&pFormatCtx);
return 0;
}
static av_cold int init_subtitles(AVFilterContext *ctx)
{
int j, ret, sid;
int k = 0;
AVDictionary *codec_opts = NULL;
AVFormatContext *fmt = NULL;
AVCodecContext *dec_ctx = NULL;
AVCodec *dec = NULL;
const AVCodecDescriptor *dec_desc;
AVStream *st;
AVPacket pkt;
AssContext *ass = ctx->priv;
/* Init libass */
ret = init(ctx);
if (ret < 0)
return ret;
ass->track = ass_new_track(ass->library);
if (!ass->track) {
av_log(ctx, AV_LOG_ERROR, "Could not create a libass track\n");
return AVERROR(EINVAL);
}
/* Open subtitles file */
ret = avformat_open_input(&fmt, ass->filename, NULL, NULL);
if (ret < 0) {
av_log(ctx, AV_LOG_ERROR, "Unable to open %s\n", ass->filename);
goto end;
}
ret = avformat_find_stream_info(fmt, NULL);
if (ret < 0)
goto end;
/* Locate subtitles stream */
if (ass->stream_index < 0)
ret = av_find_best_stream(fmt, AVMEDIA_TYPE_SUBTITLE, -1, -1, NULL, 0);
else {
ret = -1;
if (ass->stream_index < fmt->nb_streams) {
for (j = 0; j < fmt->nb_streams; j++) {
if (fmt->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
if (ass->stream_index == k) {
ret = j;
break;
}
k++;
}
}
}
}
if (ret < 0) {
av_log(ctx, AV_LOG_ERROR, "Unable to locate subtitle stream in %s\n",
ass->filename);
goto end;
}
sid = ret;
st = fmt->streams[sid];
/* Load attached fonts */
for (j = 0; j < fmt->nb_streams; j++) {
AVStream *st = fmt->streams[j];
if (st->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT &&
attachment_is_font(st)) {
const AVDictionaryEntry *tag = NULL;
tag = av_dict_get(st->metadata, "filename", NULL,
AV_DICT_MATCH_CASE);
if (tag) {
av_log(ctx, AV_LOG_DEBUG, "Loading attached font: %s\n",
tag->value);
ass_add_font(ass->library, tag->value,
st->codecpar->extradata,
st->codecpar->extradata_size);
} else {
av_log(ctx, AV_LOG_WARNING,
"Font attachment has no filename, ignored.\n");
}
}
}
/* Initialize fonts */
ass_set_fonts(ass->renderer, NULL, NULL, 1, NULL, 1);
/* Open decoder */
dec = avcodec_find_decoder(st->codecpar->codec_id);
if (!dec) {
av_log(ctx, AV_LOG_ERROR, "Failed to find subtitle codec %s\n",
avcodec_get_name(st->codecpar->codec_id));
return AVERROR(EINVAL);
}
dec_desc = avcodec_descriptor_get(st->codecpar->codec_id);
if (dec_desc && !(dec_desc->props & AV_CODEC_PROP_TEXT_SUB)) {
av_log(ctx, AV_LOG_ERROR,
"Only text based subtitles are currently supported\n");
return AVERROR_PATCHWELCOME;
}
if (ass->charenc)
av_dict_set(&codec_opts, "sub_charenc", ass->charenc, 0);
if (LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57,26,100))
av_dict_set(&codec_opts, "sub_text_format", "ass", 0);
dec_ctx = avcodec_alloc_context3(dec);
if (!dec_ctx)
return AVERROR(ENOMEM);
ret = avcodec_parameters_to_context(dec_ctx, st->codecpar);
if (ret < 0)
goto end;
/*
* This is required by the decoding process in order to rescale the
* timestamps: in the current API the decoded subtitles have their pts
* expressed in AV_TIME_BASE, and thus the lavc internals need to know the
* stream time base in order to achieve the rescaling.
*
* That API is old and needs to be reworked to match behaviour with A/V.
*/
av_codec_set_pkt_timebase(dec_ctx, st->time_base);
ret = avcodec_open2(dec_ctx, NULL, &codec_opts);
if (ret < 0)
goto end;
if (ass->force_style) {
char **list = NULL;
char *temp = NULL;
char *ptr = av_strtok(ass->force_style, ",", &temp);
int i = 0;
while (ptr) {
av_dynarray_add(&list, &i, ptr);
if (!list) {
ret = AVERROR(ENOMEM);
goto end;
}
ptr = av_strtok(NULL, ",", &temp);
}
av_dynarray_add(&list, &i, NULL);
if (!list) {
ret = AVERROR(ENOMEM);
goto end;
}
ass_set_style_overrides(ass->library, list);
av_free(list);
}
/* Decode subtitles and push them into the renderer (libass) */
if (dec_ctx->subtitle_header)
ass_process_codec_private(ass->track,
dec_ctx->subtitle_header,
dec_ctx->subtitle_header_size);
av_init_packet(&pkt);
pkt.data = NULL;
pkt.size = 0;
while (av_read_frame(fmt, &pkt) >= 0) {
int i, got_subtitle;
AVSubtitle sub = {0};
if (pkt.stream_index == sid) {
ret = avcodec_decode_subtitle2(dec_ctx, &sub, &got_subtitle, &pkt);
if (ret < 0) {
av_log(ctx, AV_LOG_WARNING, "Error decoding: %s (ignored)\n",
av_err2str(ret));
} else if (got_subtitle) {
const int64_t start_time = av_rescale_q(sub.pts, AV_TIME_BASE_Q, av_make_q(1, 1000));
const int64_t duration = sub.end_display_time;
for (i = 0; i < sub.num_rects; i++) {
char *ass_line = sub.rects[i]->ass;
if (!ass_line)
break;
if (LIBAVCODEC_VERSION_INT < AV_VERSION_INT(57,25,100))
ass_process_data(ass->track, ass_line, strlen(ass_line));
else
ass_process_chunk(ass->track, ass_line, strlen(ass_line),
start_time, duration);
}
}
}
av_packet_unref(&pkt);
avsubtitle_free(&sub);
}
end:
av_dict_free(&codec_opts);
avcodec_close(dec_ctx);
avcodec_free_context(&dec_ctx);
avformat_close_input(&fmt);
return ret;
}
bool DWVideo::Init(const char* url)
{
m_audio_frame = av_frame_alloc();
if(avformat_open_input(&m_avformat_context,url,NULL,NULL))
{
exit(-1);
}
if(avformat_find_stream_info(m_avformat_context, NULL))
{
return false;
}
av_dump_format(m_avformat_context,0,url,0);
video_stream = -1;
audio_stream = -1;
for(int i =0; i < m_avformat_context->nb_streams; i++)
{
if(m_avformat_context->streams[i]->
codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
{
video_stream = i;
}else if(m_avformat_context->streams[i]->
codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
{
audio_stream = i;
}
}
if(video_stream == -1)
{
fprintf(stderr,"비디오 스트림 못찾음 !\n");
return false;
}
if(audio_stream == -1)
{
fprintf(stderr,"오디오 스트림 못찾음 !\n");
return false;
}
/*
m_audio_codec_context_orig =
m_avformat_context->streams[audio_stream]->codecpar;
m_audio_codec =
avcodec_find_decoder(m_audio_codec_context_orig->codec_id);
if(m_audio_codec == NULL)
{
fprintf(stderr,"오디오 코덱 못 열음!\n");
return false;
}
m_audio_codec_context = avcodec_alloc_context3(m_audio_codec);
if(avcodec_parameters_to_context(m_audio_codec_context,m_audio_codec_context_orig) != 0)
{
return false;
}
if(avcodec_open2(m_audio_codec_context,m_audio_codec,NULL)<0)
{
return false;
}
packet_queue_init(&m_audio_q);
m_wanted_spec.freq = m_audio_codec_context->sample_rate;
m_wanted_spec.format = AUDIO_S16SYS;
m_wanted_spec.channels = m_audio_codec_context->channels;
m_wanted_spec.silence = 0;
//sdl이 추가 오디오 데이터를 요구할때 버퍼 사이즈
m_wanted_spec.samples = 8000;
m_wanted_spec.callback = AudioCallback;
m_wanted_spec.userdata = m_audio_codec_context;
if(SDL_OpenAudio(&m_wanted_spec,&m_spec) < 0)
{
fprintf(stderr,"오디오 오픈 실패 !\n");
return false;
}
SDL_PauseAudio(0);*/
m_codec_context_orig =
m_avformat_context->streams[video_stream]->codecpar;
m_codec = avcodec_find_decoder(m_codec_context_orig->codec_id);
if(m_codec == NULL)
{
fprintf(stderr,"코덱 못찾음 !\n");
return false;
}
m_codec_context = avcodec_alloc_context3(m_codec);
if(avcodec_parameters_to_context(m_codec_context,m_codec_context_orig) != 0)
{
return false;
}
if(avcodec_open2(m_codec_context,m_codec,NULL)<0)
{
return false;
}
m_frame = av_frame_alloc();
if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO|SDL_INIT_TIMER))
{
fprintf(stderr, "SDL초기화 에러 \n");
return false;
}
m_texture = SDL_CreateTexture
(game::Instance()->getRenderer(),SDL_PIXELFORMAT_IYUV,SDL_TEXTUREACCESS_STREAMING,
m_codec_context_orig->width,m_codec_context_orig->height);
delay_time = 1000.0f/FPS;
start_time = 0;
return true;
}
int main(int argc, char* argv[]) {
printf("Play simple video\n");
if(argc < 2) {
printf("Miss input video");
return -1;
}
int ret = -1, i = -1, v_stream_idx = -1;
char* vf_path = argv[1];
// f**k, fmt_ctx must be inited by NULL
AVFormatContext* fmt_ctx = NULL;
AVCodecContext* codec_ctx = NULL;
AVCodec* codec;
AVFrame * frame;
AVPacket packet;
av_register_all();
ret = avformat_open_input(&fmt_ctx, vf_path, NULL, NULL);
if(ret < 0){
printf("Open video file %s failed \n", vf_path);
goto end;
}
if(avformat_find_stream_info(fmt_ctx, NULL)<0)
goto end;
av_dump_format(fmt_ctx, 0, vf_path, 0);
for(i = 0; i< fmt_ctx->nb_streams; i++) {
if(fmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
v_stream_idx = i;
break;
}
}
if(v_stream_idx == -1) {
printf("Cannot find video stream\n");
goto end;
}
codec_ctx = avcodec_alloc_context3(NULL);
avcodec_parameters_to_context(codec_ctx, fmt_ctx->streams[v_stream_idx]->codecpar);
codec = avcodec_find_decoder(codec_ctx->codec_id);
if(codec == NULL){
printf("Unsupported codec for video file\n");
goto end;
}
if(avcodec_open2(codec_ctx, codec, NULL) < 0){
printf("Can not open codec\n");
goto end;
}
if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER)) {
printf("Could not init SDL due to %s", SDL_GetError());
goto end;
}
SDL_Window *window;
SDL_Renderer *renderer;
SDL_Texture *texture;
SDL_Event event;
SDL_Rect r;
window = SDL_CreateWindow("SDL_CreateTexture", SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED, codec_ctx->width, codec_ctx->height,
SDL_WINDOW_RESIZABLE);
r.x = 0;
r.y = 0;
r.w = codec_ctx->width;
r.h = codec_ctx->height;
renderer = SDL_CreateRenderer(window, -1, 0);
// texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET,
// codec_ctx->width, codec_ctx->height);
texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_YV12, SDL_TEXTUREACCESS_STREAMING,
codec_ctx->width, codec_ctx->height);
struct SwsContext *sws_ctx = NULL;
sws_ctx = sws_getContext(codec_ctx->width, codec_ctx->height, codec_ctx->pix_fmt,
codec_ctx->width, codec_ctx->height, AV_PIX_FMT_YUV420P, SWS_BILINEAR, NULL, NULL, NULL);
frame = av_frame_alloc();
int ret1, ret2;
AVFrame* pict;
pict = av_frame_alloc();
int numBytes;
uint8_t *buffer = NULL;
numBytes=avpicture_get_size(AV_PIX_FMT_YUV420P, codec_ctx->width,
codec_ctx->height);
buffer=(uint8_t *)av_malloc(numBytes*sizeof(uint8_t));
// required, or bad dst image pointers
avpicture_fill((AVPicture *)pict, buffer, AV_PIX_FMT_YUV420P,
codec_ctx->width, codec_ctx->height);
i = 0;
while (1) {
SDL_PollEvent(&event);
if(event.type == SDL_QUIT)
break;
ret = av_read_frame(fmt_ctx, &packet);
if(ret <0){
continue;
}
if(packet.stream_index == v_stream_idx) {
ret1 = avcodec_send_packet(codec_ctx, &packet);
ret2 = avcodec_receive_frame(codec_ctx, frame);
if(ret2 < 0 ){
continue;
}
sws_scale(sws_ctx, (uint8_t const * const *)frame->data,
frame->linesize, 0, codec_ctx->height,
pict->data, pict->linesize);
// if(++i <=5 ){
// save_frame(pict, codec_ctx->width, codec_ctx->height, i);
// }
SDL_UpdateYUVTexture(texture, &r, pict->data[0], pict->linesize[0],
pict->data[1], pict->linesize[1],
pict->data[2], pict->linesize[2]);
// SDL_UpdateTexture(texture, &r, pict->data[0], pict->linesize[0]);
// r.x=rand()%500;
// r.y=rand()%500;
// SDL_SetRenderTarget(renderer, texture);
// SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0x00);
SDL_RenderClear(renderer);
// SDL_RenderDrawRect(renderer,&r);
// SDL_SetRenderDrawColor(renderer, 0xFF, 0x00, 0x00, 0x00);
// SDL_RenderFillRect(renderer, &r);
// SDL_SetRenderTarget(renderer, NULL);
SDL_RenderCopy(renderer, texture, NULL, NULL);
// SDL_RenderCopy(renderer, texture, &r, &r);
SDL_RenderPresent(renderer);
// SDL_Delay(50);
}
av_packet_unref(&packet);
}
SDL_DestroyRenderer(renderer);
SDL_Quit();
av_frame_free(&frame);
avcodec_close(codec_ctx);
avcodec_free_context(&codec_ctx);
end:
avformat_close_input(&fmt_ctx);
printf("Shutdown\n");
return 0;
}
static int seek_test(const char *input_filename, const char *start, const char *end)
{
AVCodec *codec = NULL;
AVCodecContext *ctx= NULL;
AVCodecParameters *origin_par = NULL;
AVFrame *fr = NULL;
AVFormatContext *fmt_ctx = NULL;
int video_stream;
int result;
int i, j;
long int start_ts, end_ts;
size_of_array = 0;
number_of_elements = 0;
crc_array = pts_array = NULL;
result = avformat_open_input(&fmt_ctx, input_filename, NULL, NULL);
if (result < 0) {
av_log(NULL, AV_LOG_ERROR, "Can't open file\n");
return result;
}
result = avformat_find_stream_info(fmt_ctx, NULL);
if (result < 0) {
av_log(NULL, AV_LOG_ERROR, "Can't get stream info\n");
return result;
}
start_ts = read_seek_range(start);
end_ts = read_seek_range(end);
if ((start_ts < 0) || (end_ts < 0))
return -1;
//TODO: add ability to work with audio format
video_stream = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
if (video_stream < 0) {
av_log(NULL, AV_LOG_ERROR, "Can't find video stream in input file\n");
return -1;
}
origin_par = fmt_ctx->streams[video_stream]->codecpar;
codec = avcodec_find_decoder(origin_par->codec_id);
if (!codec) {
av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n");
return -1;
}
ctx = avcodec_alloc_context3(codec);
if (!ctx) {
av_log(NULL, AV_LOG_ERROR, "Can't allocate decoder context\n");
return AVERROR(ENOMEM);
}
result = avcodec_parameters_to_context(ctx, origin_par);
if (result) {
av_log(NULL, AV_LOG_ERROR, "Can't copy decoder context\n");
return result;
}
result = avcodec_open2(ctx, codec, NULL);
if (result < 0) {
av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n");
return result;
}
fr = av_frame_alloc();
if (!fr) {
av_log(NULL, AV_LOG_ERROR, "Can't allocate frame\n");
return AVERROR(ENOMEM);
}
result = compute_crc_of_packets(fmt_ctx, video_stream, ctx, fr, i, j, 1);
if (result != 0)
return -1;
for (i = start_ts; i < end_ts; i += 100) {
for (j = i + 100; j < end_ts; j += 100)
result = compute_crc_of_packets(fmt_ctx, video_stream, ctx, fr, i, j, 0);
if (result != 0)
return -1;
}
av_freep(&crc_array);
av_freep(&pts_array);
av_frame_free(&fr);
avcodec_close(ctx);
avformat_close_input(&fmt_ctx);
avcodec_free_context(&ctx);
return 0;
}
STATUS DemuxerLibAV::selectVideoStream() {
if (!_initialized) {
log->printf("DemuxerLibAV::selectVideoStream(): demuxer not opened!\n");
return S_FAIL;
}
for (U32 i = 0; i < _afc->nb_streams; i++) {
AVStream *stream = _afc->streams[i];
AVCodec *codec = avcodec_find_decoder(stream->codecpar->codec_id);
if (codec == NULL) {
log->printf("DemuxerLibAV::selectVideoStream(): avcodec_find_decoder failed!\n");
return S_FAIL;
}
AVCodecContext *cc = avcodec_alloc_context3(codec);
if (cc == NULL) {
log->printf("DemuxerLibAV::selectVideoStream(): avcodec_alloc_context3 failed!\n");
return S_FAIL;
}
if (avcodec_parameters_to_context(cc, stream->codecpar) < 0) {
log->printf("DemuxerLibAV::selectVideoStream(): avcodec_parameters_to_context failed!\n");
avcodec_free_context(&cc);
return S_FAIL;
}
if (cc->codec_type == AVMEDIA_TYPE_VIDEO) {
_videoStream = stream;
if (cc->codec_id == AV_CODEC_ID_H264) {
if (cc->extradata && cc->extradata_size >= 8 && cc->extradata[0] == 1) {
const AVBitStreamFilter *bsf = av_bsf_get_by_name("h264_mp4toannexb");
if (bsf == nullptr) {
log->printf("DemuxerLibAV::selectVideoStream(): av_bsf_get_by_name failed!\n");
avcodec_free_context(&cc);
return S_FAIL;
}
if (av_bsf_alloc(bsf, &_bsf) < 0) {
log->printf("DemuxerLibAV::selectVideoStream(): av_bsf_alloc failed!\n");
avcodec_free_context(&cc);
return S_FAIL;
}
if (avcodec_parameters_from_context(_bsf->par_in, cc) < 0)
{
log->printf("DemuxerLibAV::selectVideoStream(): avcodec_parameters_from_context failed!\n");
av_bsf_free(&_bsf);
avcodec_free_context(&cc);
return S_FAIL;
}
_bsf->time_base_in = cc->time_base;
if (av_bsf_init(_bsf) < 0) {
log->printf("DemuxerLibAV::selectVideoStream(): av_bsf_init failed!\n");
av_bsf_free(&_bsf);
avcodec_free_context(&cc);
return S_FAIL;
}
}
} else if (cc->codec_id == AV_CODEC_ID_MPEG4) {
const AVBitStreamFilter *bsf = av_bsf_get_by_name("mpeg4_unpack_bframes");
if (bsf == nullptr) {
log->printf("DemuxerLibAV::selectVideoStream(): av_bsf_get_by_name failed!\n");
avcodec_free_context(&cc);
return S_FAIL;
}
if (av_bsf_alloc(bsf, &_bsf) < 0) {
log->printf("DemuxerLibAV::selectVideoStream(): av_bsf_alloc failed!\n");
avcodec_free_context(&cc);
return S_FAIL;
}
if (avcodec_parameters_from_context(_bsf->par_in, cc) < 0)
{
log->printf("DemuxerLibAV::selectVideoStream(): avcodec_parameters_from_context failed!\n");
av_bsf_free(&_bsf);
avcodec_free_context(&cc);
return S_FAIL;
}
_bsf->time_base_in = cc->time_base;
if (av_bsf_init(_bsf) < 0) {
log->printf("DemuxerLibAV::selectVideoStream(): av_bsf_init failed!\n");
av_bsf_free(&_bsf);
avcodec_free_context(&cc);
return S_FAIL;
}
} else if (cc->codec_id == AV_CODEC_ID_HEVC) {
if (cc->extradata && cc->extradata_size >= 8 && cc->extradata[0] == 1) {
const AVBitStreamFilter *bsf = av_bsf_get_by_name("hevc_mp4toannexb");
if (bsf == nullptr) {
log->printf("DemuxerLibAV::selectVideoStream(): av_bitstream_filter_init failed!\n");
avcodec_free_context(&cc);
return S_FAIL;
}
if (av_bsf_alloc(bsf, &_bsf) < 0) {
log->printf("DemuxerLibAV::selectVideoStream(): av_bsf_alloc failed!\n");
avcodec_free_context(&cc);
return S_FAIL;
}
if (avcodec_parameters_from_context(_bsf->par_in, cc) < 0)
{
log->printf("DemuxerLibAV::selectVideoStream(): avcodec_parameters_from_context failed!\n");
av_bsf_free(&_bsf);
avcodec_free_context(&cc);
return S_FAIL;
}
_bsf->time_base_in = cc->time_base;
if (av_bsf_init(_bsf) < 0) {
log->printf("DemuxerLibAV::selectVideoStream(): av_bsf_init failed!\n");
av_bsf_free(&_bsf);
avcodec_free_context(&cc);
return S_FAIL;
}
}
}
_videoStreamInfo.width = (U32)cc->width;
_videoStreamInfo.height = (U32)cc->height;
_videoStreamInfo.timeBaseScale = (U32)cc->time_base.num;
_videoStreamInfo.timeBaseRate = (U32)cc->time_base.den;
_videoStreamInfo.priv = cc;
switch (cc->codec_id) {
case AV_CODEC_ID_MPEG1VIDEO:
_videoStreamInfo.codecId = CODEC_ID_MPEG1VIDEO;
break;
case AV_CODEC_ID_MPEG2VIDEO:
_videoStreamInfo.codecId = CODEC_ID_MPEG2VIDEO;
break;
case AV_CODEC_ID_H261:
_videoStreamInfo.codecId = CODEC_ID_H261;
break;
case AV_CODEC_ID_H263:
_videoStreamInfo.codecId = CODEC_ID_H263;
break;
case AV_CODEC_ID_MPEG4:
_videoStreamInfo.codecId = CODEC_ID_MPEG4;
break;
case AV_CODEC_ID_MSMPEG4V1:
_videoStreamInfo.codecId = CODEC_ID_MSMPEG4V1;
break;
case AV_CODEC_ID_MSMPEG4V2:
_videoStreamInfo.codecId = CODEC_ID_MSMPEG4V2;
break;
case AV_CODEC_ID_MSMPEG4V3:
_videoStreamInfo.codecId = CODEC_ID_MSMPEG4V3;
break;
case AV_CODEC_ID_H263P:
_videoStreamInfo.codecId = CODEC_ID_H263P;
break;
case AV_CODEC_ID_H263I:
_videoStreamInfo.codecId = CODEC_ID_H263I;
break;
case AV_CODEC_ID_FLV1:
_videoStreamInfo.codecId = CODEC_ID_FLV1;
break;
case AV_CODEC_ID_SVQ1:
_videoStreamInfo.codecId = CODEC_ID_SVQ1;
break;
case AV_CODEC_ID_SVQ3:
_videoStreamInfo.codecId = CODEC_ID_SVQ3;
break;
case AV_CODEC_ID_AIC:
_videoStreamInfo.codecId = CODEC_ID_AIC;
break;
case AV_CODEC_ID_DVVIDEO:
_videoStreamInfo.codecId = CODEC_ID_DVVIDEO;
break;
case AV_CODEC_ID_VP3:
_videoStreamInfo.codecId = CODEC_ID_VP3;
break;
case AV_CODEC_ID_VP5:
_videoStreamInfo.codecId = CODEC_ID_VP5;
break;
case AV_CODEC_ID_VP6:
_videoStreamInfo.codecId = CODEC_ID_VP6;
break;
case AV_CODEC_ID_VP6A:
_videoStreamInfo.codecId = CODEC_ID_VP6A;
break;
case AV_CODEC_ID_VP6F:
_videoStreamInfo.codecId = CODEC_ID_VP6F;
break;
case AV_CODEC_ID_VP7:
_videoStreamInfo.codecId = CODEC_ID_VP7;
break;
case AV_CODEC_ID_VP8:
_videoStreamInfo.codecId = CODEC_ID_VP8;
break;
case AV_CODEC_ID_VP9:
_videoStreamInfo.codecId = CODEC_ID_VP9;
break;
case AV_CODEC_ID_WEBP:
_videoStreamInfo.codecId = CODEC_ID_WEBP;
break;
case AV_CODEC_ID_THEORA:
_videoStreamInfo.codecId = CODEC_ID_THEORA;
break;
case AV_CODEC_ID_RV10:
_videoStreamInfo.codecId = CODEC_ID_RV10;
break;
case AV_CODEC_ID_RV20:
_videoStreamInfo.codecId = CODEC_ID_RV20;
break;
case AV_CODEC_ID_RV30:
_videoStreamInfo.codecId = CODEC_ID_RV30;
break;
case AV_CODEC_ID_RV40:
_videoStreamInfo.codecId = CODEC_ID_RV40;
break;
case AV_CODEC_ID_WMV1:
_videoStreamInfo.codecId = CODEC_ID_WMV1;
break;
case AV_CODEC_ID_WMV2:
_videoStreamInfo.codecId = CODEC_ID_WMV2;
break;
case AV_CODEC_ID_WMV3:
_videoStreamInfo.codecId = CODEC_ID_WMV3;
break;
case AV_CODEC_ID_VC1:
_videoStreamInfo.codecId = CODEC_ID_VC1;
break;
case AV_CODEC_ID_H264:
_videoStreamInfo.codecId = CODEC_ID_H264;
break;
case AV_CODEC_ID_HEVC:
_videoStreamInfo.codecId = CODEC_ID_HEVC;
break;
default:
_videoStreamInfo.codecId = CODEC_ID_NONE;
log->printf("DemuxerLibAV::selectVideoStream(): Unknown codec: 0x%08x!\n",
cc->codec_id);
avcodec_free_context(&cc);
return S_FAIL;
}
switch (cc->pix_fmt) {
case AV_PIX_FMT_RGB24:
_videoStreamInfo.pixelfmt = FMT_RGB24;
break;
case AV_PIX_FMT_ARGB:
_videoStreamInfo.pixelfmt = FMT_ARGB;
break;
case AV_PIX_FMT_YUV420P:
_videoStreamInfo.pixelfmt = FMT_YUV420P;
break;
case AV_PIX_FMT_YUV422P:
_videoStreamInfo.pixelfmt = FMT_YUV422P;
break;
case AV_PIX_FMT_YUV444P:
_videoStreamInfo.pixelfmt = FMT_YUV444P;
break;
case AV_PIX_FMT_NV12:
_videoStreamInfo.pixelfmt = FMT_NV12;
break;
default:
_videoStreamInfo.pixelfmt = FMT_NONE;
log->printf("DemuxerLibAV::selectVideoStream(): Unknown pixel format: 0x%08x!\n", cc->pix_fmt);
avcodec_free_context(&cc);
return S_FAIL;
}
return S_OK;
}
}
return S_FAIL;
}
int MP4Decoder::InitDecoder(const char *mp4Path) {
// 1.注册所有组件
av_register_all();
// 2.创建AVFormatContext结构体
pFormatCtx = avformat_alloc_context();
// 3.打开一个输入文件
if (avformat_open_input(&pFormatCtx, mp4Path, NULL, NULL) != 0) {
LOGE("could not open input stream");
return -1;
}
// 4.获取媒体的信息
if (avformat_find_stream_info(pFormatCtx, NULL) < 0) {
LOGE("could not find stream information");
return -1;
}
//获取视频轨的下标
int videoIndex = -1;
for (int i = 0; i < pFormatCtx->nb_streams; i++)
if (pFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
videoIndex = i;
break;
}
if (videoIndex == -1) {
LOGE("could not find a video stream");
return -1;
}
// 5.查找解码器
pCodec = avcodec_find_decoder(pFormatCtx->streams[videoIndex]->codecpar->codec_id);
if (pCodec == NULL) {
LOGE("could not find Codec");
return -1;
}
// 6.配置解码器
pCodecCtx = avcodec_alloc_context3(pCodec);
avcodec_parameters_to_context(pCodecCtx, pFormatCtx->streams[videoIndex]->codecpar);
pCodecCtx->thread_count = 1;
if (avcodec_open2(pCodecCtx, pCodec, NULL) < 0) {
LOGE("could not open codec");
return -1;
}
pFrame = av_frame_alloc();
pFrameYUV = av_frame_alloc();
int bufferSize = av_image_get_buffer_size(AV_PIX_FMT_YUV420P,
pCodecCtx->width,
pCodecCtx->height, 1);
uint8_t *out_buffer = (unsigned char *) av_malloc(bufferSize);
av_image_fill_arrays(pFrameYUV->data,
pFrameYUV->linesize,
out_buffer,
AV_PIX_FMT_YUV420P,
pCodecCtx->width,
pCodecCtx->height, 1);
pAvPacket = (AVPacket *) av_malloc(sizeof(AVPacket));
pSwsContext = sws_getContext(pCodecCtx->width, pCodecCtx->height, pCodecCtx->pix_fmt,
pCodecCtx->width, pCodecCtx->height, AV_PIX_FMT_YUV420P,
SWS_BICUBIC, NULL, NULL, NULL);
return 0;
}
int main(int argc, char* argv[]) {
printf("Read few frame and write to image\n");
if(argc < 2) {
printf("Missing input video file\n");
return -1;
}
int ret = -1, i = 0, v_stream_idx = -1;
char* vf_path = argv[1];
AVFormatContext* fmt_ctx = NULL;
AVCodecContext* codec_ctx = NULL;
AVCodec* codec = NULL;
AVPacket pkt;
AVFrame* frm = NULL;
av_register_all();
ret = avformat_open_input(&fmt_ctx, vf_path, NULL, NULL);
if(ret < 0){
printf("Open video file %s failed \n", vf_path);
goto end;
}
// i dont know but without this function, sws_getContext does not work
if(avformat_find_stream_info(fmt_ctx, NULL)<0)
return -1;
av_dump_format(fmt_ctx, 0, argv[1], 0);
for(i = 0; i < fmt_ctx->nb_streams; i++) {
if(fmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
v_stream_idx = i;
break;
}
}
if(v_stream_idx == -1) {
printf("Cannot find video stream\n");
goto end;
}else{
printf("Video stream %d with resolution %dx%d\n", v_stream_idx,
fmt_ctx->streams[i]->codecpar->width,
fmt_ctx->streams[i]->codecpar->height);
}
codec_ctx = avcodec_alloc_context3(NULL);
avcodec_parameters_to_context(codec_ctx, fmt_ctx->streams[v_stream_idx]->codecpar);
codec = avcodec_find_decoder(codec_ctx->codec_id);
if(codec == NULL){
printf("Unsupported codec for video file\n");
goto end;
}
ret = avcodec_open2(codec_ctx, codec, NULL);
if(ret < 0){
printf("Can not open codec\n");
goto end;
}
frm = av_frame_alloc();
struct SwsContext *sws_ctx = NULL;
AVFrame *pFrameRGB = NULL;
int numBytes;
uint8_t *buffer = NULL;
// Allocate an AVFrame structure
pFrameRGB=av_frame_alloc();
if(pFrameRGB==NULL)
return -1;
// Determine required buffer size and allocate buffer
numBytes=avpicture_get_size(AV_PIX_FMT_RGB24, codec_ctx->width,
codec_ctx->height);
buffer=(uint8_t *)av_malloc(numBytes*sizeof(uint8_t));
sws_ctx =
sws_getContext
(
codec_ctx->width,
codec_ctx->height,
codec_ctx->pix_fmt,
codec_ctx->width,
codec_ctx->height,
AV_PIX_FMT_RGB24,
SWS_BILINEAR,
NULL,
NULL,
NULL
);
if(sws_ctx == NULL) {
printf("Can not use sws\n");
goto end;
}
avpicture_fill((AVPicture *)pFrameRGB, buffer, AV_PIX_FMT_RGB24,
codec_ctx->width, codec_ctx->height);
i=0;
int ret1 = -1, ret2 = -1, fi = -1;
while(av_read_frame(fmt_ctx, &pkt)>=0) {
if(pkt.stream_index == v_stream_idx) {
ret1 = avcodec_send_packet(codec_ctx, &pkt);
ret2 = avcodec_receive_frame(codec_ctx, frm);
printf("ret1 %d ret2 %d\n", ret1, ret2);
// avcodec_decode_video2(codec_ctx, frm, &fi, &pkt);
}
// if not check ret2, error occur [swscaler @ 0x1cb3c40] bad src image pointers
// ret2 same as fi
// if(fi && ++i <= 5) {
if(ret2>= 0 && ++i <= 5) {
sws_scale
(
sws_ctx,
(uint8_t const * const *)frm->data,
frm->linesize,
0,
codec_ctx->height,
pFrameRGB->data,
pFrameRGB->linesize
);
save_frame(pFrameRGB, codec_ctx->width, codec_ctx->height, i);
// save_frame(frm, codec_ctx->width, codec_ctx->height, i);
}
av_packet_unref(&pkt);
if(i>=5){
break;
}
}
av_frame_free(&frm);
avcodec_close(codec_ctx);
avcodec_free_context(&codec_ctx);
end:
avformat_close_input(&fmt_ctx);
printf("Shutdown\n");
return 0;
}
