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Code Issues Releases Activity

iff: remove get_palette_size() wrapper

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Remove one level of indirection/improve readability.
This commit is contained in:
Stefano Sabatini 2011-05-09 23:51:33 +02:00
parent 83294a3251
commit 8b1171e93e
1 changed files with 9 additions and 18 deletions
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27
libavcodec/iff.c
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@ -38,18 +38,6 @@ typedef enum {
MASK_LASSO
} mask_type;
/**
* Gets the size of CMAP palette data beyond the IFF extra context.
* Please note that any value < 2 of IFF extra context or
* raw extradata < 0 is considered as illegal extradata.
*
* @param avctx the AVCodecContext where to extract palette data size from
* @return size of raw palette data in bytes
*/
static av_always_inline int get_palette_size(const AVCodecContext *const avctx) {
return avctx->extradata_size - AV_RB16(avctx->extradata);
}
/**
* Gets the actual raw image data after video properties which
* contains the raw image data beyond the IFF extra context.
@ -174,6 +162,7 @@ static int ff_cmap_read_palette(AVCodecContext *avctx, uint32_t *pal)
{
int count, i;
const uint8_t *const palette = avctx->extradata + AV_RB16(avctx->extradata);
int palette_size = avctx->extradata_size - AV_RB16(avctx->extradata);
if (avctx->bits_per_coded_sample > 8) {
av_log(avctx, AV_LOG_ERROR, "bit_per_coded_sample > 8 not supported\n");
@ -182,7 +171,7 @@ static int ff_cmap_read_palette(AVCodecContext *avctx, uint32_t *pal)
count = 1 << avctx->bits_per_coded_sample;
// If extradata is smaller than actually needed, fill the remaining with black.
count = FFMIN(get_palette_size(avctx) / 3, count);
count = FFMIN(palette_size / 3, count);
if (count) {
for (i=0; i < count; i++) {
pal[i] = 0xFF000000 | AV_RB24(palette + i*3);
@ -210,6 +199,8 @@ static int extract_header(AVCodecContext *const avctx,
const uint8_t *buf;
unsigned buf_size;
IffContext *s = avctx->priv_data;
int palette_size = avctx->extradata_size - AV_RB16(avctx->extradata);
if (avpkt) {
if (avpkt->size < 2)
return AVERROR_INVALIDDATA;
@ -226,10 +217,10 @@ static int extract_header(AVCodecContext *const avctx,
return AVERROR_INVALIDDATA;
buf = avctx->extradata;
buf_size = bytestream_get_be16(&buf);
if (buf_size <= 1 || get_palette_size(avctx) < 0) {
if (buf_size <= 1 || palette_size < 0) {
av_log(avctx, AV_LOG_ERROR,
"Invalid palette size received: %u -> palette data offset: %d\n",
buf_size, get_palette_size(avctx));
buf_size, palette_size);
return AVERROR_INVALIDDATA;
}
}
@ -260,7 +251,7 @@ static int extract_header(AVCodecContext *const avctx,
av_freep(&s->ham_palbuf);
if (s->ham) {
int i, count = FFMIN(get_palette_size(avctx) / 3, 1 << s->ham);
int i, count = FFMIN(palette_size / 3, 1 << s->ham);
const uint8_t *const palette = avctx->extradata + AV_RB16(avctx->extradata);
s->ham_buf = av_malloc((s->planesize * 8) + FF_INPUT_BUFFER_PADDING_SIZE);
if (!s->ham_buf)
@ -311,9 +302,9 @@ static av_cold int decode_init(AVCodecContext *avctx)
int err;
if (avctx->bits_per_coded_sample <= 8) {
int palette_size = avctx->extradata_size - AV_RB16(avctx->extradata);
avctx->pix_fmt = (avctx->bits_per_coded_sample < 8) ||
(avctx->extradata_size >= 2 && get_palette_size(avctx)) ? PIX_FMT_PAL8
: PIX_FMT_GRAY8;
(avctx->extradata_size >= 2 && palette_size) ? PIX_FMT_PAL8 : PIX_FMT_GRAY8;
} else if (avctx->bits_per_coded_sample <= 32) {
avctx->pix_fmt = PIX_FMT_BGR32;
} else {