Hi,
On Thu, Aug 18, 2016 at 2:10 AM, Umair Khan <omerj...@gmail.com> wrote:
> On Thu, Aug 18, 2016 at 1:28 AM, James Almer <jamr...@gmail.com> wrote:
>> On 8/17/2016 3:59 PM, Umair Khan wrote:
>>> Hi,
>>>
>>> Patch attached.
>>>
>>> I hope this is the cleanest solution. :)
>>>
>>> - Umair
>>>
>>>
>>> patch.diff
>>>
>>>
>>> From be04357d54897173b1776ed92ab8347b3cdffd46 Mon Sep 17 00:00:00 2001
>>> From: Umair Khan <omerj...@gmail.com>
>>> Date: Thu, 18 Aug 2016 00:27:42 +0530
>>> Subject: [PATCH] avformat/movenc: allow rewriting extradata
>>>
>>> Signed-off-by: Umair Khan <omerj...@gmail.com>
>>> ---
>>> libavformat/movenc.c | 30 ++++++++++++++++++++++++++++++
>>> libavformat/movenc.h | 2 ++
>>> 2 files changed, 32 insertions(+)
>>>
>>> diff --git a/libavformat/movenc.c b/libavformat/movenc.c
>>> index 14db880..b33f24c 100644
>>> --- a/libavformat/movenc.c
>>> +++ b/libavformat/movenc.c
>>> @@ -4919,6 +4919,19 @@ static int mov_write_single_packet(AVFormatContext
>>> *s, AVPacket *pkt)
>>> trk->start_cts = pkt->pts - pkt->dts;
>>> else
>>> trk->start_cts = 0;
>>> + }
>>> +
>>> + if (trk->par->codec_id == AV_CODEC_ID_MP4ALS) {
>>> + int side_size = 0;
>>> + uint8_t *side = av_packet_get_side_data(pkt,
>>> AV_PKT_DATA_NEW_EXTRADATA, &side_size);
>>> + av_log(s, AV_LOG_ERROR, "side_size = %d\n", side_size);
>>
>> I'm not sure this is useful at all, but if you think it is
>> then make it either AV_ERROR_VERBOSE or AV_ERROR_DEBUG.
>
> Sorry for this. I overlooked it.
> I'll resend the patch.
Updated patch attached.
- Umair
From 3bda0c5d727e7b1f45e8fddc8c0022c0a1d5e66a Mon Sep 17 00:00:00 2001
From: Umair Khan <omerj...@gmail.com>
Date: Thu, 18 Aug 2016 00:27:42 +0530
Subject: [PATCH] avformat/movenc: allow rewriting extradata
Signed-off-by: Umair Khan <omerj...@gmail.com>
---
libavformat/movenc.c | 28 ++++++++++++++++++++++++++++
libavformat/movenc.h | 2 ++
2 files changed, 30 insertions(+)
diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 14db880..1235b37 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -4919,6 +4919,18 @@ static int mov_write_single_packet(AVFormatContext *s,
AVPacket *pkt)
trk->start_cts = pkt->pts - pkt->dts;
else
trk->start_cts = 0;
+ }
+
+ if (trk->par->codec_id == AV_CODEC_ID_MP4ALS) {
+ int side_size = 0;
+ uint8_t *side = av_packet_get_side_data(pkt,
AV_PKT_DATA_NEW_EXTRADATA, &side_size);
+ if (side && side_size > 0 && (side_size != par->extradata_size
|| memcmp(side, par->extradata, side_size))) {
+ av_free(par->extradata);
+ par->extradata = av_mallocz(side_size +
AV_INPUT_BUFFER_PADDING_SIZE);
+ memcpy(par->extradata, side, side_size);
+ par->extradata_size = side_size;
+ mov->need_rewrite_extradata = 1;
+ }
}
return 0; /* Discard 0 sized packets */
@@ -5923,6 +5935,22 @@ static int mov_write_trailer(AVFormatContext *s)
int i;
int64_t moov_pos;
+ if (mov->need_rewrite_extradata) {
+ for (i = 0; i < s->nb_streams; i++) {
+ MOVTrack *track= &mov->tracks[i];
+ AVCodecParameters *par = track->par;
+
+ track->vos_len = par->extradata_size;
+ track->vos_data = av_malloc(track->vos_len);
+ if (!track->vos_data) {
+ AVERROR(ENOMEM);
+ goto error;
+ }
+ memcpy(track->vos_data, par->extradata, track->vos_len);
+ }
+ mov->need_rewrite_extradata = 0;
+ }
+
/*
* Before actually writing the trailer, make sure that there are no
* dangling subtitles, that need a terminating sample.
diff --git a/libavformat/movenc.h b/libavformat/movenc.h
index 6e9f5ac..894a1b0 100644
--- a/libavformat/movenc.h
+++ b/libavformat/movenc.h
@@ -215,6 +215,8 @@ typedef struct MOVMuxContext {
uint8_t *encryption_kid;
int encryption_kid_len;
+ int need_rewrite_extradata;
+
} MOVMuxContext;
#define FF_MOV_FLAG_RTP_HINT (1 << 0)
--
2.8.1
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