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rscc: Add extended pixel format support

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Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
This commit is contained in:
Vittorio Giovara 2016-03-29 20:04:07 +02:00
parent 4c6836db0f
commit 51dc4de121
1 changed files with 37 additions and 8 deletions
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45
libavcodec/rscc.c
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@ -31,7 +31,7 @@
* and it can be deflated or not. Similarly, pixel data comes after the header
* and a variable size value, and it can be deflated or just raw.
*
* Supports: BGRA
* Supports: BGRA, BGR24, RGB555, RGB8
*/
#include <stdint.h>
@ -57,6 +57,7 @@ typedef struct RsccContext {
AVFrame *reference;
Tile *tiles;
unsigned int tiles_size;
int component_size;
/* zlib interaction */
uint8_t *inflated_buf;
@ -80,10 +81,37 @@ static av_cold int rscc_init(AVCodecContext *avctx)
if (!ctx->reference)
return AVERROR(ENOMEM);
avctx->pix_fmt = AV_PIX_FMT_BGRA;
/* Get pixel format and the size of the pixel */
if (avctx->codec_tag == MKTAG('I', 'S', 'C', 'C')) {
avctx->pix_fmt = AV_PIX_FMT_BGRA;
ctx->component_size = 4;
} else if (avctx->codec_tag == MKTAG('R', 'S', 'C', 'C')) {
ctx->component_size = avctx->bits_per_coded_sample / 8;
switch (avctx->bits_per_coded_sample) {
case 8:
avpriv_report_missing_feature(avctx, "8 bits per pixel");
return AVERROR_PATCHWELCOME;
case 16:
avctx->pix_fmt = AV_PIX_FMT_RGB555LE;
break;
case 24:
avctx->pix_fmt = AV_PIX_FMT_BGR24;
break;
case 32:
avctx->pix_fmt = AV_PIX_FMT_BGRA;
break;
default:
av_log(avctx, AV_LOG_ERROR, "Invalid bits per pixel value (%d)\n",
avctx->bits_per_coded_sample);
return AVERROR_INVALIDDATA;
}
} else {
av_log(avctx, AV_LOG_ERROR, "Invalid codec tag\n");
return AVERROR_INVALIDDATA;
}
/* Store the value to check for keyframes */
ctx->inflated_size = avctx->width * avctx->height * 4;
ctx->inflated_size = avctx->width * avctx->height * ctx->component_size;
/* Allocate maximum size possible, a full frame */
ctx->inflated_buf = av_malloc(ctx->inflated_size);
@ -180,7 +208,7 @@ static int rscc_decode_frame(AVCodecContext *avctx, void *data,
ctx->tiles[i].y = bytestream2_get_le16(gbc);
ctx->tiles[i].h = bytestream2_get_le16(gbc);
pixel_size += ctx->tiles[i].w * ctx->tiles[i].h * 4;
pixel_size += ctx->tiles[i].w * ctx->tiles[i].h * ctx->component_size;
ff_dlog(avctx, "tile %d orig(%d,%d) %dx%d.\n", i,
ctx->tiles[i].x, ctx->tiles[i].y,
@ -243,11 +271,12 @@ static int rscc_decode_frame(AVCodecContext *avctx, void *data,
for (i = 0; i < tiles_nb; i++) {
uint8_t *dst = ctx->reference->data[0] + ctx->reference->linesize[0] *
(avctx->height - ctx->tiles[i].y - 1) +
ctx->tiles[i].x * 4;
ctx->tiles[i].x * ctx->component_size;
av_image_copy_plane(dst, -1 * ctx->reference->linesize[0],
raw, ctx->tiles[i].w * 4,
ctx->tiles[i].w * 4, ctx->tiles[i].h);
raw += ctx->tiles[i].w * 4 * ctx->tiles[i].h;
raw, ctx->tiles[i].w * ctx->component_size,
ctx->tiles[i].w * ctx->component_size,
ctx->tiles[i].h);
raw += ctx->tiles[i].w * ctx->component_size * ctx->tiles[i].h;
}
/* Frame is ready to be output */