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avviddec: Fix pool reallocation logic

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Some check where incorect and also unsafe. The only reliable information
in get_buffer2 is the picture width/height really. The side effect is
that the width/height of the internal pool endup padded, so when we
switch we also need to switch to the a new width/height, hence we save
the pool info.

https://bugzilla.gnome.org/show_bug.cgi?id=753869
This commit is contained in:
Nicolas Dufresne 2015-08-20 08:02:11 -07:00
parent 173718d146
commit 6e590fe498
2 changed files with 42 additions and 18 deletions
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56
ext/libav/gstavviddec.c
View file

@ -669,38 +669,54 @@ gst_ffmpegvideodec_prepare_dr_pool (GstFFMpegVidDec * ffmpegdec,
static void
gst_ffmpegviddec_ensure_internal_pool (GstFFMpegVidDec * ffmpegdec,
AVFrame * picture, GstVideoInfo * info)
AVFrame * picture)
{
AVCodecContext *context = ffmpegdec->context;
GstAllocationParams params = DEFAULT_ALLOC_PARAM;
GstVideoInfo info;
GstVideoFormat format;
GstCaps *caps;
GstStructure *config;
gint i;
if (ffmpegdec->internal_pool != NULL &&
ffmpegdec->pool_width == picture->width &&
ffmpegdec->pool_height == picture->height &&
ffmpegdec->pool_format == picture->format)
return;
GST_DEBUG_OBJECT (ffmpegdec, "Updating internal pool (%i, %i)",
picture->width, picture->height);
format = gst_ffmpeg_pixfmt_to_videoformat (picture->format);
gst_video_info_set_format (info, format, context->width, context->height);
gst_video_info_set_format (&info, format, picture->width, picture->height);
if (ffmpegdec->internal_pool != NULL ||
(ffmpegdec->pic_width == context->width &&
ffmpegdec->pic_height == context->height &&
ffmpegdec->pic_pix_fmt == picture->format))
return;
for (i = 0; i < G_N_ELEMENTS (ffmpegdec->stride); i++)
ffmpegdec->stride[i] = -1;
if (ffmpegdec->internal_pool)
gst_object_unref (ffmpegdec->internal_pool);
ffmpegdec->internal_pool = gst_video_buffer_pool_new ();
config = gst_buffer_pool_get_config (ffmpegdec->internal_pool);
caps = gst_video_info_to_caps (info);
gst_buffer_pool_config_set_params (config, caps, info->size, 2, 0);
caps = gst_video_info_to_caps (&info);
gst_buffer_pool_config_set_params (config, caps, info.size, 2, 0);
gst_buffer_pool_config_set_allocator (config, NULL, &params);
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
gst_ffmpegvideodec_prepare_dr_pool (ffmpegdec,
ffmpegdec->internal_pool, info, config);
ffmpegdec->internal_pool, &info, config);
/* generic video pool never fails */
gst_buffer_pool_set_config (ffmpegdec->internal_pool, config);
gst_caps_unref (caps);
gst_buffer_pool_set_active (ffmpegdec->internal_pool, TRUE);
/* Remember pool size so we can detect changes */
ffmpegdec->pool_width = picture->width;
ffmpegdec->pool_height = picture->height;
ffmpegdec->pool_format = picture->format;
ffmpegdec->pool_info = info;
}
static gboolean
@ -725,7 +741,6 @@ gst_ffmpegviddec_get_buffer2 (AVCodecContext * context, AVFrame * picture,
GstFFMpegVidDecVideoFrame *dframe;
GstFFMpegVidDec *ffmpegdec;
gint c;
GstVideoInfo info;
GstFlowReturn ret;
ffmpegdec = (GstFFMpegVidDec *) context->opaque;
@ -766,7 +781,7 @@ gst_ffmpegviddec_get_buffer2 (AVCodecContext * context, AVFrame * picture,
if (!gst_ffmpegviddec_can_direct_render (ffmpegdec))
goto no_dr;
gst_ffmpegviddec_ensure_internal_pool (ffmpegdec, picture, &info);
gst_ffmpegviddec_ensure_internal_pool (ffmpegdec, picture);
ret = gst_buffer_pool_acquire_buffer (ffmpegdec->internal_pool,
&frame->output_buffer, NULL);
@ -781,13 +796,13 @@ gst_ffmpegviddec_get_buffer2 (AVCodecContext * context, AVFrame * picture,
gst_buffer_replace (&frame->output_buffer, NULL);
/* Fill avpicture */
if (!gst_video_frame_map (&dframe->vframe, &info, dframe->buffer,
GST_MAP_READWRITE))
if (!gst_video_frame_map (&dframe->vframe, &ffmpegdec->pool_info,
dframe->buffer, GST_MAP_READWRITE))
goto invalid_frame;
dframe->mapped = TRUE;
for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
if (c < GST_VIDEO_INFO_N_PLANES (&info)) {
if (c < GST_VIDEO_INFO_N_PLANES (&ffmpegdec->pool_info)) {
picture->data[c] = GST_VIDEO_FRAME_PLANE_DATA (&dframe->vframe, c);
picture->linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&dframe->vframe, c);
@ -1201,12 +1216,12 @@ get_output_buffer (GstFFMpegVidDec * ffmpegdec, GstVideoCodecFrame * frame)
if (c < GST_VIDEO_INFO_N_PLANES (info)) {
pic.data[c] = GST_VIDEO_FRAME_PLANE_DATA (&vframe, c);
pic.linesize[c] = GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, c);
GST_LOG_OBJECT (ffmpegdec, "[%i] linesize %d, data %p", c,
pic.linesize[c], pic.data[c]);
} else {
pic.data[c] = NULL;
pic.linesize[c] = 0;
}
GST_LOG_OBJECT (ffmpegdec, "linesize %d, data %p", pic.linesize[c],
pic.data[c]);
}
outpic = (AVPicture *) ffmpegdec->picture;
@ -1712,6 +1727,10 @@ gst_ffmpegviddec_stop (GstVideoDecoder * decoder)
ffmpegdec->ctx_time_n = 0;
ffmpegdec->ctx_time_d = 0;
ffmpegdec->pool_width = 0;
ffmpegdec->pool_height = 0;
ffmpegdec->pool_format = 0;
return TRUE;
}
@ -1826,6 +1845,7 @@ gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
if (ffmpegdec->internal_pool)
gst_object_unref (ffmpegdec->internal_pool);
ffmpegdec->internal_pool = gst_object_ref (pool);
ffmpegdec->pool_info = state->info;
goto done;
}
}

4
ext/libav/gstavviddec.h
View file

@ -70,6 +70,10 @@ struct _GstFFMpegVidDec
/* Internally used for direct rendering */
GstBufferPool *internal_pool;
gint pool_width;
gint pool_height;
enum PixelFormat pool_format;
GstVideoInfo pool_info;
};
typedef struct _GstFFMpegVidDecClass GstFFMpegVidDecClass;