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Feature: remove log

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pull/221/head
xufuji456 2 years ago
parent e111d924ef
commit 588aeec39e
2 changed files with 23 additions and 42 deletions
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  1. 63
      app/src/main/cpp/media_transcode.cpp
  2. BIN
      picture/ffmpeg_group.png

63
app/src/main/cpp/media_transcode.cpp
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@ -39,7 +39,6 @@ static StreamContext *stream_ctx;
static int open_input_file(const char *filename) static int open_input_file(const char *filename)
{ {
int ret; int ret;
unsigned int i;
ifmt_ctx = nullptr; ifmt_ctx = nullptr;
if ((ret = avformat_open_input(&ifmt_ctx, filename, nullptr, nullptr)) < 0) { if ((ret = avformat_open_input(&ifmt_ctx, filename, nullptr, nullptr)) < 0) {
@ -57,7 +56,7 @@ static int open_input_file(const char *filename)
if (!stream_ctx) if (!stream_ctx)
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
for (i = 0; i < ifmt_ctx->nb_streams; i++) { for (int i = 0; i < ifmt_ctx->nb_streams; i++) {
AVStream *stream = ifmt_ctx->streams[i]; AVStream *stream = ifmt_ctx->streams[i];
AVCodec *dec = avcodec_find_decoder(stream->codecpar->codec_id); AVCodec *dec = avcodec_find_decoder(stream->codecpar->codec_id);
AVCodecContext *codec_ctx; AVCodecContext *codec_ctx;
@ -76,7 +75,7 @@ static int open_input_file(const char *filename)
"for stream #%u\n", i); "for stream #%u\n", i);
return ret; return ret;
} }
/* Reencode video & audio and remux subtitles etc. */ /* encode video & audio and remux subtitles etc. */
if (codec_ctx->codec_type == AVMEDIA_TYPE_VIDEO if (codec_ctx->codec_type == AVMEDIA_TYPE_VIDEO
|| codec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) { || codec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
if (codec_ctx->codec_type == AVMEDIA_TYPE_VIDEO) if (codec_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
@ -102,7 +101,6 @@ static int open_output_file(const char *filename)
AVCodecContext *dec_ctx, *enc_ctx; AVCodecContext *dec_ctx, *enc_ctx;
AVCodec *encoder; AVCodec *encoder;
int ret; int ret;
unsigned int i;
ofmt_ctx = nullptr; ofmt_ctx = nullptr;
avformat_alloc_output_context2(&ofmt_ctx, nullptr, nullptr, filename); avformat_alloc_output_context2(&ofmt_ctx, nullptr, nullptr, filename);
@ -111,7 +109,7 @@ static int open_output_file(const char *filename)
return AVERROR_UNKNOWN; return AVERROR_UNKNOWN;
} }
for (i = 0; i < ifmt_ctx->nb_streams; i++) { for (int i = 0; i < ifmt_ctx->nb_streams; i++) {
out_stream = avformat_new_stream(ofmt_ctx, nullptr); out_stream = avformat_new_stream(ofmt_ctx, nullptr);
if (!out_stream) { if (!out_stream) {
ALOGE("Failed allocating output stream\n"); ALOGE("Failed allocating output stream\n");
@ -135,9 +133,8 @@ static int open_output_file(const char *filename)
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
} }
/* In this example, we transcode to same properties (picture size, /* we transcode to same properties (picture size, sample rate etc.).
* sample rate etc.). These properties can be changed for output * These properties can be changed for output streams using filters */
* streams easily using filters */
if (dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO) { if (dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
enc_ctx->height = dec_ctx->height; enc_ctx->height = dec_ctx->height;
enc_ctx->width = dec_ctx->width; enc_ctx->width = dec_ctx->width;
@ -179,7 +176,6 @@ static int open_output_file(const char *filename)
ALOGE("Elementary stream #%d is of unknown type, cannot proceed\n", i); ALOGE("Elementary stream #%d is of unknown type, cannot proceed\n", i);
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} else { } else {
/* if this stream must be remuxed */
ret = avcodec_parameters_copy(out_stream->codecpar, in_stream->codecpar); ret = avcodec_parameters_copy(out_stream->codecpar, in_stream->codecpar);
if (ret < 0) { if (ret < 0) {
ALOGE("Copying parameters for stream #%u failed\n", i); ALOGE("Copying parameters for stream #%u failed\n", i);
@ -389,7 +385,7 @@ static int init_filters()
return 0; return 0;
} }
static int encode_write_frame(AVFrame *filt_frame, unsigned int stream_index, int *got_frame) { static int encode_write_frame(AVFrame *filt_frame, int stream_index, int *got_frame) {
int ret; int ret;
int got_frame_local; int got_frame_local;
AVPacket enc_pkt; AVPacket enc_pkt;
@ -400,13 +396,10 @@ static int encode_write_frame(AVFrame *filt_frame, unsigned int stream_index, in
if (!got_frame) if (!got_frame)
got_frame = &got_frame_local; got_frame = &got_frame_local;
ALOGE("Encoding frame\n");
/* encode filtered frame */
enc_pkt.data = nullptr; enc_pkt.data = nullptr;
enc_pkt.size = 0; enc_pkt.size = 0;
av_init_packet(&enc_pkt); av_init_packet(&enc_pkt);
ret = enc_func(stream_ctx[stream_index].enc_ctx, &enc_pkt, ret = enc_func(stream_ctx[stream_index].enc_ctx, &enc_pkt, filt_frame, got_frame);
filt_frame, got_frame);
av_frame_free(&filt_frame); av_frame_free(&filt_frame);
if (ret < 0) if (ret < 0)
return ret; return ret;
@ -419,18 +412,16 @@ static int encode_write_frame(AVFrame *filt_frame, unsigned int stream_index, in
stream_ctx[stream_index].enc_ctx->time_base, stream_ctx[stream_index].enc_ctx->time_base,
ofmt_ctx->streams[stream_index]->time_base); ofmt_ctx->streams[stream_index]->time_base);
ALOGE("Muxing frame\n");
/* mux encoded frame */ /* mux encoded frame */
ret = av_interleaved_write_frame(ofmt_ctx, &enc_pkt); ret = av_interleaved_write_frame(ofmt_ctx, &enc_pkt);
return ret; return ret;
} }
static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index) static int filter_encode_write_frame(AVFrame *frame, int stream_index)
{ {
int ret; int ret;
AVFrame *filt_frame; AVFrame *filter_frame;
ALOGE("Pushing decoded frame to filters\n");
/* push the decoded frame into the filtergraph */ /* push the decoded frame into the filtergraph */
ret = av_buffersrc_add_frame_flags(filter_ctx[stream_index].buffersrc_ctx, ret = av_buffersrc_add_frame_flags(filter_ctx[stream_index].buffersrc_ctx,
frame, 0); frame, 0);
@ -441,27 +432,21 @@ static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index)
/* pull filtered frames from the filtergraph */ /* pull filtered frames from the filtergraph */
while (1) { while (1) {
filt_frame = av_frame_alloc(); filter_frame = av_frame_alloc();
if (!filt_frame) { if (!filter_frame) {
ret = AVERROR(ENOMEM); ret = AVERROR(ENOMEM);
break; break;
} }
ALOGE("Pulling filtered frame from filters\n"); ret = av_buffersink_get_frame(filter_ctx[stream_index].buffersink_ctx, filter_frame);
ret = av_buffersink_get_frame(filter_ctx[stream_index].buffersink_ctx,
filt_frame);
if (ret < 0) { if (ret < 0) {
/* if no more frames for output - returns AVERROR(EAGAIN)
* if flushed and no more frames for output - returns AVERROR_EOF
* rewrite retcode to 0 to show it as normal procedure completion
*/
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
ret = 0; ret = 0;
av_frame_free(&filt_frame); av_frame_free(&filter_frame);
break; break;
} }
filt_frame->pict_type = AV_PICTURE_TYPE_NONE; filter_frame->pict_type = AV_PICTURE_TYPE_NONE;
ret = encode_write_frame(filt_frame, stream_index, nullptr); ret = encode_write_frame(filter_frame, stream_index, nullptr);
if (ret < 0) if (ret < 0)
break; break;
} }
@ -469,7 +454,7 @@ static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index)
return ret; return ret;
} }
static int flush_encoder(unsigned int stream_index) static int flush_encoder(int stream_index)
{ {
int ret; int ret;
int got_frame; int got_frame;
@ -479,7 +464,7 @@ static int flush_encoder(unsigned int stream_index)
return 0; return 0;
while (1) { while (1) {
ALOGE("Flushing stream #%u encoder\n", stream_index); ALOGE("Flushing stream #%d encoder\n", stream_index);
ret = encode_write_frame(nullptr, stream_index, &got_frame); ret = encode_write_frame(nullptr, stream_index, &got_frame);
if (ret < 0) if (ret < 0)
break; break;
@ -495,8 +480,8 @@ int transcode(const char *input_file, const char *output_file)
AVPacket packet = { .data = nullptr, .size = 0 }; AVPacket packet = { .data = nullptr, .size = 0 };
AVFrame *frame = nullptr; AVFrame *frame = nullptr;
enum AVMediaType type; enum AVMediaType type;
unsigned int stream_index; int stream_index;
unsigned int i; int i;
int got_frame; int got_frame;
int (*dec_func)(AVCodecContext *, AVFrame *, int *, const AVPacket *); int (*dec_func)(AVCodecContext *, AVFrame *, int *, const AVPacket *);
@ -513,11 +498,8 @@ int transcode(const char *input_file, const char *output_file)
break; break;
stream_index = packet.stream_index; stream_index = packet.stream_index;
type = ifmt_ctx->streams[packet.stream_index]->codecpar->codec_type; type = ifmt_ctx->streams[packet.stream_index]->codecpar->codec_type;
ALOGE("Demuxer gave frame of stream_index %u\n",
stream_index);
if (filter_ctx[stream_index].filter_graph) { if (filter_ctx && filter_ctx[stream_index].filter_graph) {
ALOGE("Going to re-encode&filter the frame\n");
frame = av_frame_alloc(); frame = av_frame_alloc();
if (!frame) { if (!frame) {
ret = AVERROR(ENOMEM); ret = AVERROR(ENOMEM);
@ -559,8 +541,7 @@ int transcode(const char *input_file, const char *output_file)
/* flush filters and encoders */ /* flush filters and encoders */
for (i = 0; i < ifmt_ctx->nb_streams; i++) { for (i = 0; i < ifmt_ctx->nb_streams; i++) {
/* flush filter */ if (!filter_ctx || !filter_ctx[i].filter_graph)
if (!filter_ctx[i].filter_graph)
continue; continue;
ret = filter_encode_write_frame(nullptr, i); ret = filter_encode_write_frame(nullptr, i);
if (ret < 0) { if (ret < 0) {
@ -568,7 +549,6 @@ int transcode(const char *input_file, const char *output_file)
goto end; goto end;
} }
/* flush encoder */
ret = flush_encoder(i); ret = flush_encoder(i);
if (ret < 0) { if (ret < 0) {
ALOGE("Flushing encoder failed\n"); ALOGE("Flushing encoder failed\n");
@ -587,6 +567,7 @@ end:
if (filter_ctx && filter_ctx[i].filter_graph) if (filter_ctx && filter_ctx[i].filter_graph)
avfilter_graph_free(&filter_ctx[i].filter_graph); avfilter_graph_free(&filter_ctx[i].filter_graph);
} }
if (filter_ctx)
av_free(filter_ctx); av_free(filter_ctx);
av_free(stream_ctx); av_free(stream_ctx);
avformat_close_input(&ifmt_ctx); avformat_close_input(&ifmt_ctx);

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