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avviddec: Properly align and pad buffers for libav

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https://bugzilla.gnome.org/show_bug.cgi?id=680796
This commit is contained in:
Sebastian Dröge 2012-08-08 15:59:59 +02:00
parent 2aab13b9ae
commit fe0a8d005d
1 changed files with 14 additions and 3 deletions
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17
ext/ffmpeg/gstffmpegviddec.c
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@ -1426,7 +1426,8 @@ gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
guint size, min, max;
GstStructure *config;
gboolean have_videometa, have_alignment;
GstAllocationParams params = { 0, 0, 0, 15, };
GstAllocator *allocator = NULL;
GstAllocationParams params = { 0, 15, 0, 0, };
if (!GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation (decoder,
query))
@ -1434,13 +1435,20 @@ gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
state = gst_video_decoder_get_output_state (decoder);
if (gst_query_get_n_allocation_params (query) > 0) {
gst_query_parse_nth_allocation_param (query, 0, &allocator, &params);
params.align = MAX (params.align, 15);
} else {
gst_query_add_allocation_param (query, allocator, &params);
}
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, state->caps, size, min, max);
/* we are happy with the default allocator but we would like to have 16 bytes
* aligned memory */
gst_buffer_pool_config_set_allocator (config, NULL, &params);
* aligned and padded memory */
gst_buffer_pool_config_set_allocator (config, allocator, &params);
have_videometa =
gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
@ -1520,6 +1528,8 @@ gst_ffmpegviddec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
gst_buffer_pool_set_config (pool, config);
gst_object_unref (pool);
if (allocator)
gst_object_unref (allocator);
gst_video_codec_state_unref (state);
return TRUE;
@ -1533,6 +1543,7 @@ gst_ffmpegviddec_propose_allocation (GstVideoDecoder * decoder,
gst_allocation_params_init (&params);
params.flags = GST_MEMORY_FLAG_ZERO_PADDED;
params.align = 15;
params.padding = FF_INPUT_BUFFER_PADDING_SIZE;
/* we would like to have some padding so that we don't have to
* memcpy. We don't suggest an allocator. */