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lavf/utils: Normalize AVPacket.data to native endian in ff_get_packet_palette()

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Mats Peterson 2016-03-03 08:25:58 +01:00 committed by Michael Niedermayer
parent 21234c835d
commit ba40b3520d
2 changed files with 21 additions and 9 deletions
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7
libavformat/internal.h
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@ -588,9 +588,12 @@ int ff_reshuffle_raw_rgb(AVFormatContext *s, AVPacket **ppkt, AVCodecContext *en
*
* Use 0 for the ret parameter to check for side data only.
*
* @param pkt pointer to the packet before calling ff_reshuffle_raw_rgb()
* @param pkt pointer to packet before calling ff_reshuffle_raw_rgb()
* @param ret return value from ff_reshuffle_raw_rgb(), or 0
* @param palette pointer to palette buffer
* @return negative error code or
* 1 if the packet has a palette, else 0
*/
int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, const uint8_t **palette);
int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette);
#endif /* AVFORMAT_INTERNAL_H */

23
libavformat/utils.c
View File

@ -4782,18 +4782,27 @@ int ff_standardize_creation_time(AVFormatContext *s)
return ret;
}
int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, const uint8_t **palette)
int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
{
uint8_t *side_data;
int size;
*palette = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
if (*palette && size != AVPALETTE_SIZE) {
av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
return AVERROR_INVALIDDATA;
side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
if (side_data) {
if (size != AVPALETTE_SIZE) {
av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
return AVERROR_INVALIDDATA;
}
memcpy(palette, side_data, AVPALETTE_SIZE);
return 1;
}
if (!*palette && ret == CONTAINS_PAL)
*palette = pkt->data + pkt->size - AVPALETTE_SIZE;
if (ret == CONTAINS_PAL) {
int i;
for (i = 0; i < AVPALETTE_COUNT; i++)
palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
return 1;
}
return 0;
}