From: Jon Toohill <jon.tooh...@gmail.com>
Also adds trailing_padding to AVCodecContext to match
AVCodecParameters so that it doesn't get lost when mapping
between them.
---
libavcodec/avcodec.h | 11 +++++++++++
libavcodec/utils.c | 38 ++++++++++++++++++++++----------------
2 files changed, 33 insertions(+), 16 deletions(-)
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 9ec9adf..408efe1 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -3321,6 +3321,17 @@ typedef struct AVCodecContext {
int initial_padding;
/**
+ * Audio only. The amount of padding (in samples) appended by the encoder
to
+ * the end of the audio. I.e. this number of decoded samples must be
+ * discarded by the caller from the end of the stream to get the original
+ * audio without any trailing padding.
+ *
+ * - decoding: unused
+ * - encoding: unused
+ */
+ int trailing_padding;
+
+ /**
* - decoding: For codecs that store a framerate value in the compressed
* bitstream, the decoder may export it here. { 0, 1} when
* unknown.
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index e5a832b..51f50b0 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -3251,6 +3251,10 @@ void avcodec_string(char *buf, int buf_size,
AVCodecContext *enc, int encode)
&& enc->bits_per_raw_sample !=
av_get_bytes_per_sample(enc->sample_fmt) * 8)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
" (%d bit)", enc->bits_per_raw_sample);
+ if (enc->initial_padding || enc->trailing_padding) {
+ snprintf(buf + strlen(buf), buf_size - strlen(buf),
+ ", delay %d, padding %d", enc->initial_padding,
enc->trailing_padding);
+ }
break;
case AVMEDIA_TYPE_DATA:
if (av_log_get_level() >= AV_LOG_DEBUG) {
@@ -4094,14 +4098,15 @@ int avcodec_parameters_from_context(AVCodecParameters
*par,
par->video_delay = codec->has_b_frames;
break;
case AVMEDIA_TYPE_AUDIO:
- par->format = codec->sample_fmt;
- par->channel_layout = codec->channel_layout;
- par->channels = codec->channels;
- par->sample_rate = codec->sample_rate;
- par->block_align = codec->block_align;
- par->frame_size = codec->frame_size;
- par->initial_padding = codec->initial_padding;
- par->seek_preroll = codec->seek_preroll;
+ par->format = codec->sample_fmt;
+ par->channel_layout = codec->channel_layout;
+ par->channels = codec->channels;
+ par->sample_rate = codec->sample_rate;
+ par->block_align = codec->block_align;
+ par->frame_size = codec->frame_size;
+ par->initial_padding = codec->initial_padding;
+ par->trailing_padding = codec->trailing_padding;
+ par->seek_preroll = codec->seek_preroll;
break;
case AVMEDIA_TYPE_SUBTITLE:
par->width = codec->width;
@@ -4148,14 +4153,15 @@ int avcodec_parameters_to_context(AVCodecContext *codec,
codec->has_b_frames = par->video_delay;
break;
case AVMEDIA_TYPE_AUDIO:
- codec->sample_fmt = par->format;
- codec->channel_layout = par->channel_layout;
- codec->channels = par->channels;
- codec->sample_rate = par->sample_rate;
- codec->block_align = par->block_align;
- codec->frame_size = par->frame_size;
- codec->initial_padding = par->initial_padding;
- codec->seek_preroll = par->seek_preroll;
+ codec->sample_fmt = par->format;
+ codec->channel_layout = par->channel_layout;
+ codec->channels = par->channels;
+ codec->sample_rate = par->sample_rate;
+ codec->block_align = par->block_align;
+ codec->frame_size = par->frame_size;
+ codec->initial_padding = par->initial_padding;
+ codec->trailing_padding = par->trailing_padding;
+ codec->seek_preroll = par->seek_preroll;
break;
case AVMEDIA_TYPE_SUBTITLE:
codec->width = par->width;
--
2.8.0.rc3.226.g39d4020
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