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Code Issues Releases Activity

avcodec/pngenc: Use ff_deflate_init/end() wrappers

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They return nicer error messages.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-03-15 18:20:04 +01:00
parent e85095b524
commit 1692a97251
4 changed files with 26 additions and 43 deletions
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6
configure vendored
View File

@ -2761,8 +2761,7 @@ amv_decoder_select="sp5x_decoder exif"
amv_encoder_select="jpegtables mpegvideoenc"
ape_decoder_select="bswapdsp llauddsp"
apng_decoder_select="inflate_wrapper"
apng_encoder_deps="zlib"
apng_encoder_select="llvidencdsp"
apng_encoder_select="deflate_wrapper llvidencdsp"
aptx_decoder_select="audio_frame_queue"
aptx_encoder_select="audio_frame_queue"
aptx_hd_decoder_select="audio_frame_queue"
@ -2906,8 +2905,7 @@ opus_decoder_deps="swresample"
opus_decoder_select="mdct15"
opus_encoder_select="audio_frame_queue mdct15"
png_decoder_select="inflate_wrapper"
png_encoder_deps="zlib"
png_encoder_select="llvidencdsp"
png_encoder_select="deflate_wrapper llvidencdsp"
prores_decoder_select="blockdsp idctdsp"
prores_encoder_select="fdctdsp"
qcelp_decoder_select="lsp"

10
libavcodec/png.c
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@ -38,16 +38,6 @@ static const uint8_t ff_png_pass_xshift[NB_PASSES] = {
3, 3, 2, 2, 1, 1, 0
};
void *ff_png_zalloc(void *opaque, unsigned int items, unsigned int size)
{
return av_calloc(items, size);
}
void ff_png_zfree(void *opaque, void *ptr)
{
av_free(ptr);
}
int ff_png_get_nb_channels(int color_type)
{
int channels;

4
libavcodec/png.h
View File

@ -52,10 +52,6 @@
/* Mask to determine which y pixels are valid in a pass */
extern const uint8_t ff_png_pass_ymask[NB_PASSES];
void *ff_png_zalloc(void *opaque, unsigned int items, unsigned int size);
void ff_png_zfree(void *opaque, void *ptr);
int ff_png_get_nb_channels(int color_type);
/* compute the row size of an interleaved pass */

49
libavcodec/pngenc.c
View File

@ -26,6 +26,7 @@
#include "lossless_videoencdsp.h"
#include "png.h"
#include "apng.h"
#include "zlib_wrapper.h"
#include "libavutil/avassert.h"
#include "libavutil/crc.h"
@ -56,7 +57,7 @@ typedef struct PNGEncContext {
int filter_type;
z_stream zstream;
FFZStream zstream;
uint8_t buf[IOBUF_SIZE];
int dpi; ///< Physical pixel density, in dots per inch, if set
int dpm; ///< Physical pixel density, in dots per meter, if set
@ -272,19 +273,20 @@ static void png_write_image_data(AVCodecContext *avctx,
static int png_write_row(AVCodecContext *avctx, const uint8_t *data, int size)
{
PNGEncContext *s = avctx->priv_data;
z_stream *const zstream = &s->zstream.zstream;
int ret;
s->zstream.avail_in = size;
s->zstream.next_in = data;
while (s->zstream.avail_in > 0) {
ret = deflate(&s->zstream, Z_NO_FLUSH);
zstream->avail_in = size;
zstream->next_in = data;
while (zstream->avail_in > 0) {
ret = deflate(zstream, Z_NO_FLUSH);
if (ret != Z_OK)
return -1;
if (s->zstream.avail_out == 0) {
if (zstream->avail_out == 0) {
if (s->bytestream_end - s->bytestream > IOBUF_SIZE + 100)
png_write_image_data(avctx, s->buf, IOBUF_SIZE);
s->zstream.avail_out = IOBUF_SIZE;
s->zstream.next_out = s->buf;
zstream->avail_out = IOBUF_SIZE;
zstream->next_out = s->buf;
}
}
return 0;
@ -432,6 +434,7 @@ static int encode_headers(AVCodecContext *avctx, const AVFrame *pict)
static int encode_frame(AVCodecContext *avctx, const AVFrame *pict)
{
PNGEncContext *s = avctx->priv_data;
z_stream *const zstream = &s->zstream.zstream;
const AVFrame *const p = pict;
int y, len, ret;
int row_size, pass_row_size;
@ -459,8 +462,8 @@ static int encode_frame(AVCodecContext *avctx, const AVFrame *pict)
}
/* put each row */
s->zstream.avail_out = IOBUF_SIZE;
s->zstream.next_out = s->buf;
zstream->avail_out = IOBUF_SIZE;
zstream->next_out = s->buf;
if (s->is_progressive) {
int pass;
@ -496,14 +499,14 @@ static int encode_frame(AVCodecContext *avctx, const AVFrame *pict)
}
/* compress last bytes */
for (;;) {
ret = deflate(&s->zstream, Z_FINISH);
ret = deflate(zstream, Z_FINISH);
if (ret == Z_OK || ret == Z_STREAM_END) {
len = IOBUF_SIZE - s->zstream.avail_out;
len = IOBUF_SIZE - zstream->avail_out;
if (len > 0 && s->bytestream_end - s->bytestream > len + 100) {
png_write_image_data(avctx, s->buf, len);
}
s->zstream.avail_out = IOBUF_SIZE;
s->zstream.next_out = s->buf;
zstream->avail_out = IOBUF_SIZE;
zstream->next_out = s->buf;
if (ret == Z_STREAM_END)
break;
} else {
@ -518,7 +521,7 @@ the_end:
av_freep(&crow_base);
av_freep(&progressive_buf);
av_freep(&top_buf);
deflateReset(&s->zstream);
deflateReset(zstream);
return ret;
}
@ -530,7 +533,8 @@ static int encode_png(AVCodecContext *avctx, AVPacket *pkt,
int enc_row_size;
uint64_t max_packet_size;
enc_row_size = deflateBound(&s->zstream, (avctx->width * s->bits_per_pixel + 7) >> 3);
enc_row_size = deflateBound(&s->zstream.zstream,
(avctx->width * s->bits_per_pixel + 7) >> 3);
max_packet_size =
AV_INPUT_BUFFER_MIN_SIZE + // headers
avctx->height * (
@ -858,7 +862,8 @@ static int encode_apng(AVCodecContext *avctx, AVPacket *pkt,
}
}
enc_row_size = deflateBound(&s->zstream, (avctx->width * s->bits_per_pixel + 7) >> 3);
enc_row_size = deflateBound(&s->zstream.zstream,
(avctx->width * s->bits_per_pixel + 7) >> 3);
max_packet_size =
AV_INPUT_BUFFER_MIN_SIZE + // headers
avctx->height * (
@ -1065,23 +1070,17 @@ static av_cold int png_enc_init(AVCodecContext *avctx)
}
s->bits_per_pixel = ff_png_get_nb_channels(s->color_type) * s->bit_depth;
s->zstream.zalloc = ff_png_zalloc;
s->zstream.zfree = ff_png_zfree;
s->zstream.opaque = NULL;
compression_level = avctx->compression_level == FF_COMPRESSION_DEFAULT
? Z_DEFAULT_COMPRESSION
: av_clip(avctx->compression_level, 0, 9);
if (deflateInit(&s->zstream, compression_level) != Z_OK)
return -1;
return 0;
return ff_deflate_init(&s->zstream, compression_level, avctx);
}
static av_cold int png_enc_close(AVCodecContext *avctx)
{
PNGEncContext *s = avctx->priv_data;
deflateEnd(&s->zstream);
ff_deflate_end(&s->zstream);
av_frame_free(&s->last_frame);
av_frame_free(&s->prev_frame);
av_freep(&s->last_frame_packet);