#include "avcodec.h"
#include "blockdsp.h"
#include "copy_block.h"
+#include "decode.h"
#include "hwconfig.h"
#include "idctdsp.h"
#include "internal.h"
#include "bytestream.h"
-static void build_huffman_codes(uint8_t *huff_size, uint16_t *huff_code,
- const uint8_t *bits_table)
+static void build_huffman_codes(uint8_t *huff_size, const uint8_t *bits_table)
{
- for (int i = 1, code = 0, k = 0; i <= 16; i++) {
+ for (int i = 1, k = 0; i <= 16; i++) {
int nb = bits_table[i];
for (int j = 0; j < nb;j++) {
huff_size[k] = i;
- huff_code[k] = code;
- code++;
k++;
}
- code <<= 1;
}
}
static int build_vlc(VLC *vlc, const uint8_t *bits_table,
const uint8_t *val_table, int nb_codes,
- int is_ac)
+ int is_ac, void *logctx)
{
uint8_t huff_size[256];
- uint16_t huff_code[256];
uint16_t huff_sym[256];
int i;
av_assert0(nb_codes <= 256);
- build_huffman_codes(huff_size, huff_code, bits_table);
+ build_huffman_codes(huff_size, bits_table);
for (i = 0; i < nb_codes; i++) {
huff_sym[i] = val_table[i] + 16 * is_ac;
huff_sym[i] = 16 * 256;
}
- return ff_init_vlc_sparse(vlc, 9, nb_codes, huff_size, 1, 1,
- huff_code, 2, 2, huff_sym, 2, 2, 0);
+ return ff_init_vlc_from_lengths(vlc, 9, nb_codes, huff_size, 1,
+ huff_sym, 2, 2, 0, 0, logctx);
}
static int init_default_huffman_tables(MJpegDecodeContext *s)
for (i = 0; i < FF_ARRAY_ELEMS(ht); i++) {
ret = build_vlc(&s->vlcs[ht[i].class][ht[i].index],
ht[i].bits, ht[i].values, ht[i].length,
- ht[i].class == 1);
+ ht[i].class == 1, s->avctx);
if (ret < 0)
return ret;
s->picture_ptr = s->picture;
}
+ s->pkt = av_packet_alloc();
+ if (!s->pkt)
+ return AVERROR(ENOMEM);
+
s->avctx = avctx;
ff_blockdsp_init(&s->bdsp, avctx);
ff_hpeldsp_init(&s->hdsp, avctx->flags);
s->start_code = -1;
s->first_picture = 1;
s->got_picture = 0;
- s->org_height = avctx->coded_height;
+ s->orig_height = avctx->coded_height;
avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
avctx->colorspace = AVCOL_SPC_BT470BG;
s->hwaccel_pix_fmt = s->hwaccel_sw_pix_fmt = AV_PIX_FMT_NONE;
s->interlace_polarity = 1;
}
- if ( avctx->extradata_size > 8
+ if (avctx->codec_id == AV_CODEC_ID_SMVJPEG) {
+ if (avctx->extradata_size >= 4)
+ s->smv_frames_per_jpeg = AV_RL32(avctx->extradata);
+
+ if (s->smv_frames_per_jpeg <= 0) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid number of frames per jpeg.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ s->smv_frame = av_frame_alloc();
+ if (!s->smv_frame)
+ return AVERROR(ENOMEM);
+ } else if (avctx->extradata_size > 8
&& AV_RL32(avctx->extradata) == 0x2C
&& AV_RL32(avctx->extradata+4) == 0x18) {
parse_avid(s, avctx->extradata, avctx->extradata_size);
av_log(s->avctx, AV_LOG_DEBUG, "class=%d index=%d nb_codes=%d\n",
class, index, n);
if ((ret = build_vlc(&s->vlcs[class][index], bits_table, val_table,
- n, class > 0)) < 0)
+ n, class > 0, s->avctx)) < 0)
return ret;
if (class > 0) {
ff_free_vlc(&s->vlcs[2][index]);
if ((ret = build_vlc(&s->vlcs[2][index], bits_table, val_table,
- n, 0)) < 0)
+ n, 0, s->avctx)) < 0)
return ret;
}
/* test interlaced mode */
if (s->first_picture &&
(s->multiscope != 2 || s->avctx->time_base.den >= 25 * s->avctx->time_base.num) &&
- s->org_height != 0 &&
- s->height < ((s->org_height * 3) / 4)) {
+ s->orig_height != 0 &&
+ s->height < ((s->orig_height * 3) / 4)) {
s->interlaced = 1;
s->bottom_field = s->interlace_polarity;
s->picture_ptr->interlaced_frame = 1;
size_change = 0;
}
+ if (s->avctx->codec_id == AV_CODEC_ID_SMVJPEG) {
+ s->avctx->height = s->avctx->coded_height / s->smv_frames_per_jpeg;
+ if (s->avctx->height <= 0)
+ return AVERROR_INVALIDDATA;
+ }
+
if (s->got_picture && s->interlaced && (s->bottom_field == !s->interlace_polarity)) {
if (s->progressive) {
avpriv_request_sample(s->avctx, "progressively coded interlaced picture");
s->iccnum = 0;
}
-int ff_mjpeg_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
- AVPacket *avpkt)
+// SMV JPEG just stacks several output frames into one JPEG picture
+// we handle that by setting up the cropping parameters appropriately
+static int smv_process_frame(AVCodecContext *avctx, AVFrame *frame)
+{
+ MJpegDecodeContext *s = avctx->priv_data;
+ int ret;
+
+ if (s->smv_next_frame > 0) {
+ av_assert0(s->smv_frame->buf[0]);
+ av_frame_unref(frame);
+ ret = av_frame_ref(frame, s->smv_frame);
+ if (ret < 0)
+ return ret;
+ } else {
+ av_assert0(frame->buf[0]);
+ av_frame_unref(s->smv_frame);
+ ret = av_frame_ref(s->smv_frame, frame);
+ if (ret < 0)
+ return ret;
+ }
+
+ av_assert0((s->smv_next_frame + 1) * avctx->height <= avctx->coded_height);
+
+ frame->width = avctx->coded_width;
+ frame->height = avctx->coded_height;
+ frame->crop_top = FFMIN(s->smv_next_frame * avctx->height, frame->height);
+ frame->crop_bottom = frame->height - (s->smv_next_frame + 1) * avctx->height;
+
+ s->smv_next_frame = (s->smv_next_frame + 1) % s->smv_frames_per_jpeg;
+
+ if (s->smv_next_frame == 0)
+ av_frame_unref(s->smv_frame);
+
+ return 0;
+}
+
+static int mjpeg_get_packet(AVCodecContext *avctx)
+{
+ MJpegDecodeContext *s = avctx->priv_data;
+ int ret;
+
+ av_packet_unref(s->pkt);
+ ret = ff_decode_get_packet(avctx, s->pkt);
+ if (ret < 0)
+ return ret;
+
+#if CONFIG_SP5X_DECODER || CONFIG_AMV_DECODER
+ if (avctx->codec_id == AV_CODEC_ID_SP5X ||
+ avctx->codec_id == AV_CODEC_ID_AMV) {
+ ret = ff_sp5x_process_packet(avctx, s->pkt);
+ if (ret < 0)
+ return ret;
+ }
+#endif
+
+ s->buf_size = s->pkt->size;
+
+ return 0;
+}
+
+int ff_mjpeg_receive_frame(AVCodecContext *avctx, AVFrame *frame)
{
- AVFrame *frame = data;
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
MJpegDecodeContext *s = avctx->priv_data;
const uint8_t *buf_end, *buf_ptr;
const uint8_t *unescaped_buf_ptr;
int ret = 0;
int is16bit;
- s->buf_size = buf_size;
+ if (avctx->codec_id == AV_CODEC_ID_SMVJPEG && s->smv_next_frame > 0)
+ return smv_process_frame(avctx, frame);
av_dict_free(&s->exif_metadata);
av_freep(&s->stereo3d);
if (s->iccnum != 0)
reset_icc_profile(s);
- buf_ptr = buf;
- buf_end = buf + buf_size;
+ ret = mjpeg_get_packet(avctx);
+ if (ret < 0)
+ return ret;
+
+ buf_ptr = s->pkt->data;
+ buf_end = s->pkt->data + s->pkt->size;
while (buf_ptr < buf_end) {
/* find start next marker */
start_code = ff_mjpeg_find_marker(s, &buf_ptr, buf_end,
} 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);
+ start_code, unescaped_buf_size, s->pkt->size);
return AVERROR_INVALIDDATA;
}
av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%"PTRDIFF_SPECIFIER"\n",
}
if (avctx->skip_frame == AVDISCARD_ALL) {
s->got_picture = 0;
+ ret = AVERROR(EAGAIN);
goto the_end_no_picture;
}
if (s->avctx->hwaccel) {
}
if ((ret = av_frame_ref(frame, s->picture_ptr)) < 0)
return ret;
- *got_frame = 1;
s->got_picture = 0;
- if (!s->lossless) {
+ frame->pkt_dts = s->pkt->dts;
+
+ if (!s->lossless && avctx->debug & FF_DEBUG_QP) {
int qp = FFMAX3(s->qscale[0],
s->qscale[1],
s->qscale[2]);
- int qpw = (s->width + 15) / 16;
- AVBufferRef *qp_table_buf = av_buffer_alloc(qpw);
- if (qp_table_buf) {
- memset(qp_table_buf->data, qp, qpw);
- av_frame_set_qp_table(data, qp_table_buf, 0, FF_QSCALE_TYPE_MPEG1);
- }
- if(avctx->debug & FF_DEBUG_QP)
- av_log(avctx, AV_LOG_DEBUG, "QP: %d\n", qp);
+ av_log(avctx, AV_LOG_DEBUG, "QP: %d\n", qp);
}
goto the_end;
}
if (s->stereo3d) {
- AVStereo3D *stereo = av_stereo3d_create_side_data(data);
+ AVStereo3D *stereo = av_stereo3d_create_side_data(frame);
if (stereo) {
stereo->type = s->stereo3d->type;
stereo->flags = s->stereo3d->flags;
for (i = 0; i < s->iccnum; i++)
total_size += s->iccdatalens[i];
- sd = av_frame_new_side_data(data, AV_FRAME_DATA_ICC_PROFILE, total_size);
+ sd = av_frame_new_side_data(frame, AV_FRAME_DATA_ICC_PROFILE, total_size);
if (!sd) {
av_log(s->avctx, AV_LOG_ERROR, "Could not allocate frame side data\n");
return AVERROR(ENOMEM);
}
}
- av_dict_copy(&((AVFrame *) data)->metadata, s->exif_metadata, 0);
+ av_dict_copy(&frame->metadata, s->exif_metadata, 0);
av_dict_free(&s->exif_metadata);
+ if (avctx->codec_id == AV_CODEC_ID_SMVJPEG) {
+ ret = smv_process_frame(avctx, frame);
+ if (ret < 0) {
+ av_frame_unref(frame);
+ return ret;
+ }
+ }
+
+ ret = 0;
+
the_end_no_picture:
av_log(avctx, AV_LOG_DEBUG, "decode frame unused %"PTRDIFF_SPECIFIER" bytes\n",
buf_end - buf_ptr);
-// return buf_end - buf_ptr;
- return buf_ptr - buf;
+
+ return ret;
}
+/* mxpeg may call the following function (with a blank MJpegDecodeContext)
+ * even without having called ff_mjpeg_decode_init(). */
av_cold int ff_mjpeg_decode_end(AVCodecContext *avctx)
{
MJpegDecodeContext *s = avctx->priv_data;
} else if (s->picture_ptr)
av_frame_unref(s->picture_ptr);
+ av_packet_free(&s->pkt);
+
+ av_frame_free(&s->smv_frame);
+
av_freep(&s->buffer);
av_freep(&s->stereo3d);
av_freep(&s->ljpeg_buffer);
{
MJpegDecodeContext *s = avctx->priv_data;
s->got_picture = 0;
+
+ s->smv_next_frame = 0;
+ av_frame_unref(s->smv_frame);
}
#if CONFIG_MJPEG_DECODER
.priv_data_size = sizeof(MJpegDecodeContext),
.init = ff_mjpeg_decode_init,
.close = ff_mjpeg_decode_end,
- .decode = ff_mjpeg_decode_frame,
+ .receive_frame = ff_mjpeg_receive_frame,
.flush = decode_flush,
.capabilities = AV_CODEC_CAP_DR1,
.max_lowres = 3,
.priv_class = &mjpegdec_class,
.profiles = NULL_IF_CONFIG_SMALL(ff_mjpeg_profiles),
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP |
- FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
- .hw_configs = (const AVCodecHWConfigInternal*[]) {
+ FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM | FF_CODEC_CAP_SETS_PKT_DTS,
+ .hw_configs = (const AVCodecHWConfigInternal *const []) {
#if CONFIG_MJPEG_NVDEC_HWACCEL
HWACCEL_NVDEC(mjpeg),
#endif
.priv_data_size = sizeof(MJpegDecodeContext),
.init = ff_mjpeg_decode_init,
.close = ff_mjpeg_decode_end,
- .decode = ff_mjpeg_decode_frame,
+ .receive_frame = ff_mjpeg_receive_frame,
.flush = decode_flush,
.capabilities = AV_CODEC_CAP_DR1,
.max_lowres = 3,
- .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
+ .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP |
+ FF_CODEC_CAP_SETS_PKT_DTS,
+};
+#endif
+
+#if CONFIG_SMVJPEG_DECODER
+AVCodec ff_smvjpeg_decoder = {
+ .name = "smvjpeg",
+ .long_name = NULL_IF_CONFIG_SMALL("SMV JPEG"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_SMVJPEG,
+ .priv_data_size = sizeof(MJpegDecodeContext),
+ .init = ff_mjpeg_decode_init,
+ .close = ff_mjpeg_decode_end,
+ .receive_frame = ff_mjpeg_receive_frame,
+ .flush = decode_flush,
+ .capabilities = AV_CODEC_CAP_DR1,
+ .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_EXPORTS_CROPPING |
+ FF_CODEC_CAP_SETS_PKT_DTS,
};
#endif