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avcodec/hap: pass texture-compression destination as argument, not in context 

This allows a subsequent change to compress directly into the output packet when possible.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Tom Butterworth <bangnoise@gmail.com>
This commit is contained in:
Tom Butterworth 2016-11-07 16:25:33 +00:00
parent 70c6a1bcf0
commit 0a24587588
1 changed files with 9 additions and 3 deletions
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12
libavcodec/hapenc.c
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@ -52,12 +52,14 @@ enum HapHeaderLength {
HAP_HDR_LONG = 8,
};
static void compress_texture(AVCodecContext *avctx, const AVFrame *f)
static int compress_texture(AVCodecContext *avctx, uint8_t *out, int out_length, const AVFrame *f)
{
HapContext *ctx = avctx->priv_data;
uint8_t *out = ctx->tex_buf;
int i, j;
if (ctx->tex_size > out_length)
return AVERROR_BUFFER_TOO_SMALL;
for (j = 0; j < avctx->height; j += 4) {
for (i = 0; i < avctx->width; i += 4) {
uint8_t *p = f->data[0] + i * 4 + j * f->linesize[0];
@ -65,6 +67,8 @@ static void compress_texture(AVCodecContext *avctx, const AVFrame *f)
out += step;
}
}
return 0;
}
/* section_length does not include the header */
@ -201,7 +205,9 @@ static int hap_encode(AVCodecContext *avctx, AVPacket *pkt,
return ret;
/* DXTC compression. */
compress_texture(avctx, frame);
ret = compress_texture(avctx, ctx->tex_buf, ctx->tex_size, frame);
if (ret < 0)
return ret;
/* Compress (using Snappy) the frame */
final_data_size = hap_compress_frame(avctx, pkt->data + header_length);