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Diffstat (limited to 'contrib/ffmpeg/libavcodec/nuv.c')
-rw-r--r--contrib/ffmpeg/libavcodec/nuv.c153
1 files changed, 106 insertions, 47 deletions
diff --git a/contrib/ffmpeg/libavcodec/nuv.c b/contrib/ffmpeg/libavcodec/nuv.c
index 5989c6cc2..6193806fa 100644
--- a/contrib/ffmpeg/libavcodec/nuv.c
+++ b/contrib/ffmpeg/libavcodec/nuv.c
@@ -21,7 +21,6 @@
#include <stdio.h>
#include <stdlib.h>
-#include "common.h"
#include "avcodec.h"
#include "bswap.h"
@@ -31,6 +30,8 @@
typedef struct {
AVFrame pic;
+ int codec_frameheader;
+ int quality;
int width, height;
unsigned int decomp_size;
unsigned char* decomp_buf;
@@ -39,6 +40,28 @@ typedef struct {
DSPContext dsp;
} NuvContext;
+static const uint8_t fallback_lquant[] = {
+ 16, 11, 10, 16, 24, 40, 51, 61,
+ 12, 12, 14, 19, 26, 58, 60, 55,
+ 14, 13, 16, 24, 40, 57, 69, 56,
+ 14, 17, 22, 29, 51, 87, 80, 62,
+ 18, 22, 37, 56, 68, 109, 103, 77,
+ 24, 35, 55, 64, 81, 104, 113, 92,
+ 49, 64, 78, 87, 103, 121, 120, 101,
+ 72, 92, 95, 98, 112, 100, 103, 99
+};
+
+static const uint8_t fallback_cquant[] = {
+ 17, 18, 24, 47, 99, 99, 99, 99,
+ 18, 21, 26, 66, 99, 99, 99, 99,
+ 24, 26, 56, 99, 99, 99, 99, 99,
+ 47, 66, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99
+};
+
/**
* \brief copy frame data from buffer to AVFrame, handling stride.
* \param f destination AVFrame
@@ -46,7 +69,7 @@ typedef struct {
* \param width width of the video frame
* \param height height of the video frame
*/
-static void copy_frame(AVFrame *f, uint8_t *src,
+static void copy_frame(AVFrame *f, const uint8_t *src,
int width, int height) {
AVPicture pic;
avpicture_fill(&pic, src, PIX_FMT_YUV420P, width, height);
@@ -57,7 +80,7 @@ static void copy_frame(AVFrame *f, uint8_t *src,
* \brief extract quantization tables from codec data into our context
*/
static int get_quant(AVCodecContext *avctx, NuvContext *c,
- uint8_t *buf, int size) {
+ const uint8_t *buf, int size) {
int i;
if (size < 2 * 64 * 4) {
av_log(avctx, AV_LOG_ERROR, "insufficient rtjpeg quant data\n");
@@ -70,9 +93,44 @@ static int get_quant(AVCodecContext *avctx, NuvContext *c,
return 0;
}
+/**
+ * \brief set quantization tables from a quality value
+ */
+static void get_quant_quality(NuvContext *c, int quality) {
+ int i;
+ quality = FFMAX(quality, 1);
+ for (i = 0; i < 64; i++) {
+ c->lq[i] = (fallback_lquant[i] << 7) / quality;
+ c->cq[i] = (fallback_cquant[i] << 7) / quality;
+ }
+}
+
+static int codec_reinit(AVCodecContext *avctx, int width, int height, int quality) {
+ NuvContext *c = avctx->priv_data;
+ width = (width + 1) & ~1;
+ height = (height + 1) & ~1;
+ if (quality >= 0)
+ get_quant_quality(c, quality);
+ if (width != c->width || height != c->height) {
+ if (avcodec_check_dimensions(avctx, height, width) < 0)
+ return 0;
+ avctx->width = c->width = width;
+ avctx->height = c->height = height;
+ c->decomp_size = c->height * c->width * 3 / 2;
+ c->decomp_buf = av_realloc(c->decomp_buf, c->decomp_size + LZO_OUTPUT_PADDING);
+ if (!c->decomp_buf) {
+ av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
+ return 0;
+ }
+ rtjpeg_decode_init(&c->rtj, &c->dsp, c->width, c->height, c->lq, c->cq);
+ } else if (quality != c->quality)
+ rtjpeg_decode_init(&c->rtj, &c->dsp, c->width, c->height, c->lq, c->cq);
+ return 1;
+}
+
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
- uint8_t *buf, int buf_size) {
- NuvContext *c = (NuvContext *)avctx->priv_data;
+ const uint8_t *buf, int buf_size) {
+ NuvContext *c = avctx->priv_data;
AVFrame *picture = data;
int orig_size = buf_size;
enum {NUV_UNCOMPRESSED = '0', NUV_RTJPEG = '1',
@@ -84,16 +142,6 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
return -1;
}
- if (c->pic.data[0])
- avctx->release_buffer(avctx, &c->pic);
- c->pic.reference = 1;
- c->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_READABLE |
- FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
- if (avctx->get_buffer(avctx, &c->pic) < 0) {
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
- }
-
// codec data (rtjpeg quant tables)
if (buf[0] == 'D' && buf[1] == 'R') {
int ret;
@@ -115,11 +163,43 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
// skip rest of the frameheader.
buf = &buf[12];
buf_size -= 12;
+ if (comptype == NUV_RTJPEG_IN_LZO || comptype == NUV_LZO) {
+ int outlen = c->decomp_size, inlen = buf_size;
+ if (lzo1x_decode(c->decomp_buf, &outlen, buf, &inlen))
+ av_log(avctx, AV_LOG_ERROR, "error during lzo decompression\n");
+ buf = c->decomp_buf;
+ buf_size = c->decomp_size;
+ }
+ if (c->codec_frameheader) {
+ int w, h, q;
+ if (buf_size < 12) {
+ av_log(avctx, AV_LOG_ERROR, "invalid nuv video frame\n");
+ return -1;
+ }
+ w = AV_RL16(&buf[6]);
+ h = AV_RL16(&buf[8]);
+ q = buf[10];
+ if (!codec_reinit(avctx, w, h, q))
+ return -1;
+ buf = &buf[12];
+ buf_size -= 12;
+ }
+
+ if (c->pic.data[0])
+ avctx->release_buffer(avctx, &c->pic);
+ c->pic.reference = 1;
+ c->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_READABLE |
+ FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
+ if (avctx->get_buffer(avctx, &c->pic) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return -1;
+ }
c->pic.pict_type = FF_I_TYPE;
c->pic.key_frame = 1;
// decompress/copy/whatever data
switch (comptype) {
+ case NUV_LZO:
case NUV_UNCOMPRESSED: {
int height = c->height;
if (buf_size < c->width * height * 3 / 2) {
@@ -129,24 +209,11 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
copy_frame(&c->pic, buf, c->width, height);
break;
}
+ case NUV_RTJPEG_IN_LZO:
case NUV_RTJPEG: {
rtjpeg_decode_frame_yuv420(&c->rtj, &c->pic, buf, buf_size);
break;
}
- case NUV_RTJPEG_IN_LZO: {
- int outlen = c->decomp_size, inlen = buf_size;
- if (lzo1x_decode(c->decomp_buf, &outlen, buf, &inlen))
- av_log(avctx, AV_LOG_ERROR, "error during lzo decompression\n");
- rtjpeg_decode_frame_yuv420(&c->rtj, &c->pic, c->decomp_buf, c->decomp_size);
- break;
- }
- case NUV_LZO: {
- int outlen = c->decomp_size, inlen = buf_size;
- if (lzo1x_decode(c->decomp_buf, &outlen, buf, &inlen))
- av_log(avctx, AV_LOG_ERROR, "error during lzo decompression\n");
- copy_frame(&c->pic, c->decomp_buf, c->width, c->height);
- break;
- }
case NUV_BLACK: {
memset(c->pic.data[0], 0, c->width * c->height);
memset(c->pic.data[1], 128, c->width * c->height / 4);
@@ -170,32 +237,24 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
}
static int decode_init(AVCodecContext *avctx) {
- NuvContext *c = (NuvContext *)avctx->priv_data;
- avctx->width = (avctx->width + 1) & ~1;
- avctx->height = (avctx->height + 1) & ~1;
- if (avcodec_check_dimensions(avctx, avctx->height, avctx->width) < 0) {
- return 1;
- }
- avctx->has_b_frames = 0;
+ NuvContext *c = avctx->priv_data;
avctx->pix_fmt = PIX_FMT_YUV420P;
c->pic.data[0] = NULL;
- c->width = avctx->width;
- c->height = avctx->height;
- c->decomp_size = c->height * c->width * 3 / 2;
- c->decomp_buf = av_malloc(c->decomp_size + LZO_OUTPUT_PADDING);
- if (!c->decomp_buf) {
- av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
- return 1;
- }
- dsputil_init(&c->dsp, avctx);
+ c->decomp_buf = NULL;
+ c->quality = -1;
+ c->width = 0;
+ c->height = 0;
+ c->codec_frameheader = avctx->codec_tag == MKTAG('R', 'J', 'P', 'G');
if (avctx->extradata_size)
get_quant(avctx, c, avctx->extradata, avctx->extradata_size);
- rtjpeg_decode_init(&c->rtj, &c->dsp, c->width, c->height, c->lq, c->cq);
+ dsputil_init(&c->dsp, avctx);
+ if (!codec_reinit(avctx, avctx->width, avctx->height, -1))
+ return 1;
return 0;
}
static int decode_end(AVCodecContext *avctx) {
- NuvContext *c = (NuvContext *)avctx->priv_data;
+ NuvContext *c = avctx->priv_data;
av_freep(&c->decomp_buf);
if (c->pic.data[0])
avctx->release_buffer(avctx, &c->pic);
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-27 08:41:25 +0000