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avcodec/apv_parser: use an AVBufferRef to avoid data copying

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer
2025-04-29 16:55:18 -03:00
parent 4bfe9c5663
commit 0cabfdc8bc
1 changed files with 17 additions and 1 deletions
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18
libavcodec/apv_parser.c
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@ -16,6 +16,9 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/ */
#include "libavutil/avassert.h"
#include "libavutil/buffer.h"
#include "avcodec.h" #include "avcodec.h"
#include "apv.h" #include "apv.h"
#include "cbs.h" #include "cbs.h"
@ -34,6 +37,11 @@ static const enum AVPixelFormat apv_format_table[5][5] = {
{ AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_YUVA444P16 }, { AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_YUVA444P16 },
}; };
static void dummy_free(void *opaque, uint8_t *data)
{
av_assert0(opaque == data);
}
static int parse(AVCodecParserContext *s, static int parse(AVCodecParserContext *s,
AVCodecContext *avctx, AVCodecContext *avctx,
const uint8_t **poutbuf, int *poutbuf_size, const uint8_t **poutbuf, int *poutbuf_size,
@ -41,14 +49,20 @@ static int parse(AVCodecParserContext *s,
{ {
APVParseContext *p = s->priv_data; APVParseContext *p = s->priv_data;
CodedBitstreamFragment *au = &p->au; CodedBitstreamFragment *au = &p->au;
AVBufferRef *ref = NULL;
int ret; int ret;
*poutbuf = buf; *poutbuf = buf;
*poutbuf_size = buf_size; *poutbuf_size = buf_size;
ref = av_buffer_create((uint8_t *)buf, buf_size, dummy_free,
(void *)buf, AV_BUFFER_FLAG_READONLY);
if (!ref)
return buf_size;
p->cbc->log_ctx = avctx; p->cbc->log_ctx = avctx;
ret = ff_cbs_read(p->cbc, au, NULL, buf, buf_size); ret = ff_cbs_read(p->cbc, au, ref, buf, buf_size);
if (ret < 0) { if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to parse access unit.\n"); av_log(avctx, AV_LOG_ERROR, "Failed to parse access unit.\n");
goto end; goto end;
@ -92,6 +106,8 @@ static int parse(AVCodecParserContext *s,
end: end:
ff_cbs_fragment_reset(au); ff_cbs_fragment_reset(au);
av_assert1(av_buffer_get_ref_count(ref) == 1);
av_buffer_unref(&ref);
p->cbc->log_ctx = NULL; p->cbc->log_ctx = NULL;
return buf_size; return buf_size;