* MJPEG decoder.
*/
-// #define DEBUG
#include <assert.h>
#include "libavutil/imgutils.h"
{
MJpegDecodeContext *s = avctx->priv_data;
- if (!s->picture_ptr)
- s->picture_ptr = &s->picture;
+ if (!s->picture_ptr) {
+ s->picture = av_frame_alloc();
+ if (!s->picture)
+ return AVERROR(ENOMEM);
+ s->picture_ptr = s->picture;
+ }
s->avctx = avctx;
ff_hpeldsp_init(&s->hdsp, avctx->flags);
int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
{
- int len, nb_components, i, width, height, pix_fmt_id;
+ int len, nb_components, i, width, height, pix_fmt_id, ret;
/* XXX: verify len field validity */
len = get_bits(&s->gb, 16);
if (nb_components <= 0 ||
nb_components > MAX_COMPONENTS)
return -1;
+ if (s->interlaced && (s->bottom_field == !s->interlace_polarity)) {
+ if (nb_components != s->nb_components) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "nb_components changing in interlaced picture\n");
+ return AVERROR_INVALIDDATA;
+ }
+ }
if (s->ls && !(s->bits <= 8 || nb_components == 1)) {
avpriv_report_missing_feature(s->avctx,
"JPEG-LS that is not <= 8 "
height *= 2;
}
- avcodec_set_dimensions(s->avctx, width, height);
+ ret = ff_set_dimensions(s->avctx, width, height);
+ if (ret < 0)
+ return ret;
s->first_picture = 0;
}
int16_t *quant_matrix = s->quant_matrixes[s->quant_index[c]];
GetBitContext mb_bitmask_gb;
+ if (ss < 0 || ss >= 64 ||
+ se < ss || se >= 64 ||
+ Ah < 0 || Al < 0)
+ return AVERROR_INVALIDDATA;
+
if (mb_bitmask)
init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width * s->mb_height);
/* EOF */
if (start_code < 0) {
goto the_end;
- } else if (unescaped_buf_size > (1U<<29)) {
- av_log(avctx, AV_LOG_ERROR, "MJPEG packet 0x%x too big (0x%x/0x%x), corrupt data?\n",
+ } else if (unescaped_buf_size > INT_MAX / 8) {
+ av_log(avctx, AV_LOG_ERROR,
+ "MJPEG packet 0x%x too big (%d/%d), corrupt data?\n",
start_code, unescaped_buf_size, buf_size);
return AVERROR_INVALIDDATA;
- } else {
- av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%td\n",
- start_code, buf_end - buf_ptr);
+ }
- init_get_bits(&s->gb, unescaped_buf_ptr, unescaped_buf_size * 8);
+ av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%td\n",
+ start_code, buf_end - buf_ptr);
- s->start_code = start_code;
- if (s->avctx->debug & FF_DEBUG_STARTCODE)
- av_log(avctx, AV_LOG_DEBUG, "startcode: %X\n", start_code);
+ ret = init_get_bits(&s->gb, unescaped_buf_ptr,
+ unescaped_buf_size * 8);
+ if (ret < 0)
+ return ret;
- /* process markers */
- if (start_code >= 0xd0 && start_code <= 0xd7)
- av_log(avctx, AV_LOG_DEBUG,
- "restart marker: %d\n", start_code & 0x0f);
- /* APP fields */
- else if (start_code >= APP0 && start_code <= APP15)
- mjpeg_decode_app(s);
- /* Comment */
- else if (start_code == COM)
- mjpeg_decode_com(s);
-
- if (!CONFIG_JPEGLS_DECODER &&
- (start_code == SOF48 || start_code == LSE)) {
- av_log(avctx, AV_LOG_ERROR, "JPEG-LS support not enabled.\n");
- return AVERROR(ENOSYS);
- }
+ s->start_code = start_code;
+ if (s->avctx->debug & FF_DEBUG_STARTCODE)
+ av_log(avctx, AV_LOG_DEBUG, "startcode: %X\n", start_code);
- switch (start_code) {
- case SOI:
- s->restart_interval = 0;
- s->restart_count = 0;
- /* nothing to do on SOI */
- break;
- case DQT:
- ff_mjpeg_decode_dqt(s);
- break;
- case DHT:
- if ((ret = ff_mjpeg_decode_dht(s)) < 0) {
- av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n");
- return ret;
- }
- break;
- case SOF0:
- case SOF1:
- s->lossless = 0;
- s->ls = 0;
- s->progressive = 0;
- if ((ret = ff_mjpeg_decode_sof(s)) < 0)
- return ret;
- break;
- case SOF2:
- s->lossless = 0;
- s->ls = 0;
- s->progressive = 1;
- if ((ret = ff_mjpeg_decode_sof(s)) < 0)
- return ret;
- break;
- case SOF3:
- s->lossless = 1;
- s->ls = 0;
- s->progressive = 0;
- if ((ret = ff_mjpeg_decode_sof(s)) < 0)
- return ret;
- break;
- case SOF48:
- s->lossless = 1;
- s->ls = 1;
- s->progressive = 0;
- if ((ret = ff_mjpeg_decode_sof(s)) < 0)
- return ret;
- break;
- case LSE:
- if (!CONFIG_JPEGLS_DECODER ||
- (ret = ff_jpegls_decode_lse(s)) < 0)
- return ret;
- break;
- case EOI:
- s->cur_scan = 0;
- if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
- break;
-eoi_parser:
- if (!s->got_picture) {
- av_log(avctx, AV_LOG_WARNING,
- "Found EOI before any SOF, ignoring\n");
- break;
- }
- if (s->interlaced) {
- s->bottom_field ^= 1;
- /* if not bottom field, do not output image yet */
- if (s->bottom_field == !s->interlace_polarity)
- goto not_the_end;
- }
- if ((ret = av_frame_ref(data, s->picture_ptr)) < 0)
- return ret;
- *got_frame = 1;
-
- if (!s->lossless &&
- avctx->debug & FF_DEBUG_QP) {
- av_log(avctx, AV_LOG_DEBUG,
- "QP: %d\n", FFMAX3(s->qscale[0],
- s->qscale[1],
- s->qscale[2]));
- }
+ /* process markers */
+ if (start_code >= 0xd0 && start_code <= 0xd7)
+ av_log(avctx, AV_LOG_DEBUG,
+ "restart marker: %d\n", start_code & 0x0f);
+ /* APP fields */
+ else if (start_code >= APP0 && start_code <= APP15)
+ mjpeg_decode_app(s);
+ /* Comment */
+ else if (start_code == COM)
+ mjpeg_decode_com(s);
+
+ if (!CONFIG_JPEGLS_DECODER &&
+ (start_code == SOF48 || start_code == LSE)) {
+ av_log(avctx, AV_LOG_ERROR, "JPEG-LS support not enabled.\n");
+ return AVERROR(ENOSYS);
+ }
- goto the_end;
- case SOS:
- if (!s->got_picture) {
- av_log(avctx, AV_LOG_WARNING,
- "Can not process SOS before SOF, skipping\n");
- break;
- }
- if ((ret = ff_mjpeg_decode_sos(s, NULL, NULL)) < 0 &&
- (avctx->err_recognition & AV_EF_EXPLODE))
- return ret;
- /* buggy avid puts EOI every 10-20th frame */
- /* if restart period is over process EOI */
- if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
- goto eoi_parser;
- break;
- case DRI:
- mjpeg_decode_dri(s);
+ switch (start_code) {
+ case SOI:
+ s->restart_interval = 0;
+ s->restart_count = 0;
+ /* nothing to do on SOI */
+ break;
+ case DQT:
+ ff_mjpeg_decode_dqt(s);
+ break;
+ case DHT:
+ if ((ret = ff_mjpeg_decode_dht(s)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n");
+ return ret;
+ }
+ break;
+ case SOF0:
+ case SOF1:
+ s->lossless = 0;
+ s->ls = 0;
+ s->progressive = 0;
+ if ((ret = ff_mjpeg_decode_sof(s)) < 0)
+ return ret;
+ break;
+ case SOF2:
+ s->lossless = 0;
+ s->ls = 0;
+ s->progressive = 1;
+ if ((ret = ff_mjpeg_decode_sof(s)) < 0)
+ return ret;
+ break;
+ case SOF3:
+ s->lossless = 1;
+ s->ls = 0;
+ s->progressive = 0;
+ if ((ret = ff_mjpeg_decode_sof(s)) < 0)
+ return ret;
+ break;
+ case SOF48:
+ s->lossless = 1;
+ s->ls = 1;
+ s->progressive = 0;
+ if ((ret = ff_mjpeg_decode_sof(s)) < 0)
+ return ret;
+ break;
+ case LSE:
+ if (!CONFIG_JPEGLS_DECODER ||
+ (ret = ff_jpegls_decode_lse(s)) < 0)
+ return ret;
+ break;
+ case EOI:
+ s->cur_scan = 0;
+ if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
break;
- case SOF5:
- case SOF6:
- case SOF7:
- case SOF9:
- case SOF10:
- case SOF11:
- case SOF13:
- case SOF14:
- case SOF15:
- case JPG:
- av_log(avctx, AV_LOG_ERROR,
- "mjpeg: unsupported coding type (%x)\n", start_code);
+eoi_parser:
+ if (!s->got_picture) {
+ av_log(avctx, AV_LOG_WARNING,
+ "Found EOI before any SOF, ignoring\n");
break;
}
+ if (s->interlaced) {
+ s->bottom_field ^= 1;
+ /* if not bottom field, do not output image yet */
+ if (s->bottom_field == !s->interlace_polarity)
+ goto not_the_end;
+ }
+ if ((ret = av_frame_ref(data, s->picture_ptr)) < 0)
+ return ret;
+ *got_frame = 1;
-not_the_end:
- /* eof process start code */
- buf_ptr += (get_bits_count(&s->gb) + 7) / 8;
- av_log(avctx, AV_LOG_DEBUG,
- "marker parser used %d bytes (%d bits)\n",
- (get_bits_count(&s->gb) + 7) / 8, get_bits_count(&s->gb));
+ if (!s->lossless &&
+ avctx->debug & FF_DEBUG_QP) {
+ av_log(avctx, AV_LOG_DEBUG,
+ "QP: %d\n", FFMAX3(s->qscale[0],
+ s->qscale[1],
+ s->qscale[2]));
+ }
+
+ goto the_end;
+ case SOS:
+ if (!s->got_picture) {
+ av_log(avctx, AV_LOG_WARNING,
+ "Can not process SOS before SOF, skipping\n");
+ break;
+ }
+ if ((ret = ff_mjpeg_decode_sos(s, NULL, NULL)) < 0 &&
+ (avctx->err_recognition & AV_EF_EXPLODE))
+ return ret;
+ /* buggy avid puts EOI every 10-20th frame */
+ /* if restart period is over process EOI */
+ if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
+ goto eoi_parser;
+ break;
+ case DRI:
+ mjpeg_decode_dri(s);
+ break;
+ case SOF5:
+ case SOF6:
+ case SOF7:
+ case SOF9:
+ case SOF10:
+ case SOF11:
+ case SOF13:
+ case SOF14:
+ case SOF15:
+ case JPG:
+ av_log(avctx, AV_LOG_ERROR,
+ "mjpeg: unsupported coding type (%x)\n", start_code);
+ break;
}
+
+not_the_end:
+ /* eof process start code */
+ buf_ptr += (get_bits_count(&s->gb) + 7) / 8;
+ av_log(avctx, AV_LOG_DEBUG,
+ "marker parser used %d bytes (%d bits)\n",
+ (get_bits_count(&s->gb) + 7) / 8, get_bits_count(&s->gb));
}
if (s->got_picture) {
av_log(avctx, AV_LOG_WARNING, "EOI missing, emulating\n");
MJpegDecodeContext *s = avctx->priv_data;
int i, j;
- if (s->picture_ptr)
+ if (s->picture) {
+ av_frame_free(&s->picture);
+ s->picture_ptr = NULL;
+ } else if (s->picture_ptr)
av_frame_unref(s->picture_ptr);
av_free(s->buffer);
AVCodec ff_mjpeg_decoder = {
.name = "mjpeg",
+ .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_MJPEG,
.priv_data_size = sizeof(MJpegDecodeContext),
.close = ff_mjpeg_decode_end,
.decode = ff_mjpeg_decode_frame,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
.priv_class = &mjpegdec_class,
};
AVCodec ff_thp_decoder = {
.name = "thp",
+ .long_name = NULL_IF_CONFIG_SMALL("Nintendo Gamecube THP video"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_THP,
.priv_data_size = sizeof(MJpegDecodeContext),
.close = ff_mjpeg_decode_end,
.decode = ff_mjpeg_decode_frame,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Nintendo Gamecube THP video"),
};
projects / ffmpeg / blobdiff