diff mbox

[FFmpeg-devel,1/1] Sega FILM: set dts and duration when demuxing

Message ID 20180322024432.98180-2-misty@brew.sh
State Superseded
Headers show

Commit Message

misty@brew.sh March 22, 2018, 2:44 a.m. UTC
From: Misty De Meo <mistydemeo@gmail.com>

---
 Changelog              |  1 +
 libavformat/segafilm.c | 21 +++++++++++++++++++++
 2 files changed, 22 insertions(+)

Comments

Rostislav Pehlivanov March 22, 2018, 2:52 a.m. UTC | #1
On 22 March 2018 at 02:44, <misty@brew.sh> wrote:

> From: Misty De Meo <mistydemeo@gmail.com>
>
> ---
>  Changelog              |  1 +
>  libavformat/segafilm.c | 21 +++++++++++++++++++++
>  2 files changed, 22 insertions(+)
>
> diff --git a/Changelog b/Changelog
> index 7969b414c4..6b3b2bf7fe 100644
> --- a/Changelog
> +++ b/Changelog
> @@ -47,6 +47,7 @@ version <next>:
>  - native SBC encoder and decoder
>  - drmeter audio filter
>  - hapqa_extract bitstream filter
> +- segafilm: set timestamps when demuxing
>

Changes like these shouldn't be in the changelog.


>
>
>  version 3.4:
> diff --git a/libavformat/segafilm.c b/libavformat/segafilm.c
> index 11768823fc..2237e25dae 100644
> --- a/libavformat/segafilm.c
> +++ b/libavformat/segafilm.c
> @@ -270,6 +270,8 @@ static int film_read_packet(AVFormatContext *s,
>      FilmDemuxContext *film = s->priv_data;
>      AVIOContext *pb = s->pb;
>      film_sample *sample;
> +    film_sample *next_sample = NULL;
> +    int next_sample_id;
>      int ret = 0;
>
>      if (film->current_sample >= film->sample_count)
> @@ -277,6 +279,21 @@ static int film_read_packet(AVFormatContext *s,
>
>      sample = &film->sample_table[film->current_sample];
>
> +    /* Find the next sample from the same stream, assuming there is one;
> +     * this is used to calculate the duration below */
> +    next_sample_id = film->current_sample + 1;
> +    while (next_sample == NULL) {
> +        if (next_sample_id >= film->sample_count) {
> +            break;
> +        }
>

Remove brackets, we don't put them if its a 1 line branch.



> +
> +        next_sample = &film->sample_table[next_sample_id];
> +        if (next_sample->stream != sample->stream) {
> +            next_sample = NULL;
> +            next_sample_id++;
> +        }
> +    }
> +
>      /* position the stream (will probably be there anyway) */
>      avio_seek(pb, sample->sample_offset, SEEK_SET);
>
> @@ -287,6 +304,10 @@ static int film_read_packet(AVFormatContext *s,
>      pkt->stream_index = sample->stream;
>      pkt->pts = sample->pts;
>      pkt->flags |= sample->keyframe;
> +    pkt->dts = sample->pts;
> +    if (next_sample != NULL) {
> +        pkt->duration = next_sample->pts - sample->pts;
> +    }
>

Same.



>
>      film->current_sample++;
>
> --
> 2.16.2
>
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
misty@brew.sh March 22, 2018, 2:55 a.m. UTC | #2
From: Misty De Meo <mistydemeo@gmail.com>

OK, requested changes made.

Misty De Meo (1):
  Sega FILM: set dts and duration when demuxing

 libavformat/segafilm.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
diff mbox

Patch

diff --git a/Changelog b/Changelog
index 7969b414c4..6b3b2bf7fe 100644
--- a/Changelog
+++ b/Changelog
@@ -47,6 +47,7 @@  version <next>:
 - native SBC encoder and decoder
 - drmeter audio filter
 - hapqa_extract bitstream filter
+- segafilm: set timestamps when demuxing
 
 
 version 3.4:
diff --git a/libavformat/segafilm.c b/libavformat/segafilm.c
index 11768823fc..2237e25dae 100644
--- a/libavformat/segafilm.c
+++ b/libavformat/segafilm.c
@@ -270,6 +270,8 @@  static int film_read_packet(AVFormatContext *s,
     FilmDemuxContext *film = s->priv_data;
     AVIOContext *pb = s->pb;
     film_sample *sample;
+    film_sample *next_sample = NULL;
+    int next_sample_id;
     int ret = 0;
 
     if (film->current_sample >= film->sample_count)
@@ -277,6 +279,21 @@  static int film_read_packet(AVFormatContext *s,
 
     sample = &film->sample_table[film->current_sample];
 
+    /* Find the next sample from the same stream, assuming there is one;
+     * this is used to calculate the duration below */
+    next_sample_id = film->current_sample + 1;
+    while (next_sample == NULL) {
+        if (next_sample_id >= film->sample_count) {
+            break;
+        }
+
+        next_sample = &film->sample_table[next_sample_id];
+        if (next_sample->stream != sample->stream) {
+            next_sample = NULL;
+            next_sample_id++;
+        }
+    }
+
     /* position the stream (will probably be there anyway) */
     avio_seek(pb, sample->sample_offset, SEEK_SET);
 
@@ -287,6 +304,10 @@  static int film_read_packet(AVFormatContext *s,
     pkt->stream_index = sample->stream;
     pkt->pts = sample->pts;
     pkt->flags |= sample->keyframe;
+    pkt->dts = sample->pts;
+    if (next_sample != NULL) {
+        pkt->duration = next_sample->pts - sample->pts;
+    }
 
     film->current_sample++;