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omx: Use the EOS flag to handle flushing at the end

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This avoids having to count the number of frames sent to the codec
and the number of output packets received; instead just wait until
the encoder returns a buffer with the EOS flag set.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2017-02-07 00:25:19 +02:00
parent dad7a9c7c0
commit 57ec83e424
1 changed files with 23 additions and 7 deletions
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30
libavcodec/omx.c
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@ -220,7 +220,7 @@ typedef struct OMXCodecContext {
int mutex_cond_inited;
int num_in_frames, num_out_frames;
int eos_sent, got_eos;
uint8_t *output_buf;
int output_buf_size;
@ -791,17 +791,35 @@ static int omx_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
av_log(avctx, AV_LOG_ERROR, "OMX_EmptyThisBuffer failed: %x\n", err);
return AVERROR_UNKNOWN;
}
s->num_in_frames++;
} else if (!s->eos_sent) {
buffer = get_buffer(&s->input_mutex, &s->input_cond,
&s->num_free_in_buffers, s->free_in_buffers, 1);
buffer->nFilledLen = 0;
buffer->nFlags = OMX_BUFFERFLAG_EOS;
buffer->pAppPrivate = buffer->pOutputPortPrivate = NULL;
err = OMX_EmptyThisBuffer(s->handle, buffer);
if (err != OMX_ErrorNone) {
append_buffer(&s->input_mutex, &s->input_cond, &s->num_free_in_buffers, s->free_in_buffers, buffer);
av_log(avctx, AV_LOG_ERROR, "OMX_EmptyThisBuffer failed: %x\n", err);
return AVERROR_UNKNOWN;
}
s->eos_sent = 1;
}
while (!*got_packet && ret == 0) {
// Only wait for output if flushing and not all frames have been output
while (!*got_packet && ret == 0 && !s->got_eos) {
// If not flushing, just poll the queue if there's finished packets.
// If flushing, do a blocking wait until we either get a completed
// packet, or get EOS.
buffer = get_buffer(&s->output_mutex, &s->output_cond,
&s->num_done_out_buffers, s->done_out_buffers,
!frame && s->num_out_frames < s->num_in_frames);
!frame);
if (!buffer)
break;
if (buffer->nFlags & OMX_BUFFERFLAG_EOS)
s->got_eos = 1;
if (buffer->nFlags & OMX_BUFFERFLAG_CODECCONFIG && avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
if ((ret = av_reallocp(&avctx->extradata, avctx->extradata_size + buffer->nFilledLen + AV_INPUT_BUFFER_PADDING_SIZE)) < 0) {
avctx->extradata_size = 0;
@ -811,8 +829,6 @@ static int omx_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
avctx->extradata_size += buffer->nFilledLen;
memset(avctx->extradata + avctx->extradata_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
} else {
if (buffer->nFlags & OMX_BUFFERFLAG_ENDOFFRAME)
s->num_out_frames++;
if (!(buffer->nFlags & OMX_BUFFERFLAG_ENDOFFRAME) || !pkt->data) {
// If the output packet isn't preallocated, just concatenate everything in our
// own buffer