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Support mid-stream resolution/format changes for TM1.

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This makes it easier to fix playback of 24 bit formats.

Originally committed as revision 25660 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2010-11-03 16:45:55 +00:00
parent bf800c7db8
commit 97113c2178
1 changed files with 17 additions and 5 deletions
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22
libavcodec/truemotion1.c
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@ -35,6 +35,7 @@
#include "avcodec.h"
#include "dsputil.h"
#include "libavcore/imgutils.h"
#include "truemotion1data.h"
@ -71,6 +72,7 @@ typedef struct TrueMotion1Context {
int last_deltaset, last_vectable;
unsigned int *vert_pred;
int vert_pred_size;
} TrueMotion1Context;
@ -305,6 +307,7 @@ static void gen_vector_table24(TrueMotion1Context *s, const uint8_t *sel_vector_
static int truemotion1_decode_header(TrueMotion1Context *s)
{
int i;
int new_pix_fmt;
struct frame_header header;
uint8_t header_buffer[128]; /* logical maximum size of the header */
const uint8_t *sel_vector_table;
@ -375,6 +378,8 @@ static int truemotion1_decode_header(TrueMotion1Context *s)
}
}
}
if (av_image_check_size(s->w, s->h, 0, s->avctx) < 0)
return -1;
if (header.compression >= 17) {
av_log(s->avctx, AV_LOG_ERROR, "invalid compression type (%d)\n", header.compression);
@ -396,11 +401,19 @@ static int truemotion1_decode_header(TrueMotion1Context *s)
}
}
// FIXME: where to place this ?!?!
if (compression_types[header.compression].algorithm == ALGO_RGB24H)
s->avctx->pix_fmt = PIX_FMT_RGB32;
new_pix_fmt = PIX_FMT_RGB32;
else
s->avctx->pix_fmt = PIX_FMT_RGB555; // RGB565 is supported as well
new_pix_fmt = PIX_FMT_RGB555; // RGB565 is supported as well
if (s->w != s->avctx->width || s->h != s->avctx->height ||
new_pix_fmt != s->avctx->pix_fmt) {
if (s->frame.data[0])
s->avctx->release_buffer(s->avctx, &s->frame);
s->avctx->pix_fmt = new_pix_fmt;
avcodec_set_dimensions(s->avctx, s->w, s->h);
av_fast_malloc(&s->vert_pred, &s->vert_pred_size, s->avctx->width * sizeof(unsigned int));
}
if ((header.deltaset != s->last_deltaset) || (header.vectable != s->last_vectable))
{
@ -460,8 +473,7 @@ static av_cold int truemotion1_decode_init(AVCodecContext *avctx)
/* there is a vertical predictor for each pixel in a line; each vertical
* predictor is 0 to start with */
s->vert_pred =
(unsigned int *)av_malloc(s->avctx->width * sizeof(unsigned int));
av_fast_malloc(&s->vert_pred, &s->vert_pred_size, s->avctx->width * sizeof(unsigned int));
return 0;
}