ac->m4ac.chan_config = i;
if (ac->m4ac.chan_config) {
- if (set_default_channel_config(avctx, new_che_pos, ac->m4ac.chan_config) < 0 &&
- avctx->error_recognition >= FF_ER_EXPLODE)
- return AVERROR_INVALIDDATA;
- output_configure(ac, ac->che_pos, new_che_pos, ac->m4ac.chan_config, OC_GLOBAL_HDR);
+ int ret = set_default_channel_config(avctx, new_che_pos, ac->m4ac.chan_config);
+ if (!ret)
+ output_configure(ac, ac->che_pos, new_che_pos, ac->m4ac.chan_config, OC_GLOBAL_HDR);
+ else if (avctx->error_recognition >= FF_ER_EXPLODE)
+ return AVERROR_INVALIDDATA;
}
}
}
+/**
+ * Count exponent bits based on bandwidth, coupling, and exponent strategies.
+ */
+static int count_exponent_bits(AC3EncodeContext *s)
+{
+ int blk, ch;
+ int nb_groups, bit_count;
+
+ bit_count = 0;
+ for (blk = 0; blk < s->num_blocks; blk++) {
+ AC3Block *block = &s->blocks[blk];
+ for (ch = !block->cpl_in_use; ch <= s->channels; ch++) {
+ int exp_strategy = s->exp_strategy[ch][blk];
+ int cpl = (ch == CPL_CH);
+ int nb_coefs = block->end_freq[ch] - s->start_freq[ch];
+
+ if (exp_strategy == EXP_REUSE)
+ continue;
+
+ nb_groups = exponent_group_tab[cpl][exp_strategy-1][nb_coefs];
+ bit_count += 4 + (nb_groups * 7);
+ }
+ }
+
+ return bit_count;
+}
+
+
/**
* Group exponents.
* 3 delta-encoded exponents are in each 7-bit group. The number of groups
* varies depending on exponent strategy and bandwidth.
*/
-static void group_exponents(AC3EncodeContext *s)
+void ff_ac3_group_exponents(AC3EncodeContext *s)
{
int blk, ch, i, cpl;
- int group_size, nb_groups, bit_count;
+ int group_size, nb_groups;
uint8_t *p;
int delta0, delta1, delta2;
int exp0, exp1;
- bit_count = 0;
for (blk = 0; blk < s->num_blocks; blk++) {
AC3Block *block = &s->blocks[blk];
for (ch = !block->cpl_in_use; ch <= s->channels; ch++) {
cpl = (ch == CPL_CH);
group_size = exp_strategy + (exp_strategy == EXP_D45);
nb_groups = exponent_group_tab[cpl][exp_strategy-1][block->end_freq[ch]-s->start_freq[ch]];
- bit_count += 4 + (nb_groups * 7);
p = block->exp[ch] + s->start_freq[ch] - cpl;
/* DC exponent */
}
}
}
-
- s->exponent_bits = bit_count;
}
encode_exponents(s);
- group_exponents(s);
-
emms_c();
}
if (block->cpl_in_use) {
for (ch = 1; ch <= s->fbw_channels; ch++) {
if (block->channel_in_cpl[ch]) {
- if (!s->eac3 || block->new_cpl_coords != 2)
+ if (!s->eac3 || block->new_cpl_coords[ch] != 2)
frame_bits++;
- if (block->new_cpl_coords) {
+ if (block->new_cpl_coords[ch]) {
frame_bits += 2;
frame_bits += (4 + 4) * s->num_cpl_bands;
}
{
count_frame_bits(s);
+ s->exponent_bits = count_exponent_bits(s);
+
bit_alloc_masking(s);
return cbr_bit_allocation(s);
if (block->cpl_in_use) {
for (ch = 1; ch <= s->fbw_channels; ch++) {
if (block->channel_in_cpl[ch]) {
- if (!s->eac3 || block->new_cpl_coords != 2)
- put_bits(&s->pb, 1, block->new_cpl_coords);
- if (block->new_cpl_coords) {
+ if (!s->eac3 || block->new_cpl_coords[ch] != 2)
+ put_bits(&s->pb, 1, block->new_cpl_coords[ch]);
+ if (block->new_cpl_coords[ch]) {
put_bits(&s->pb, 2, block->cpl_master_exp[ch]);
for (bnd = 0; bnd < s->num_cpl_bands; bnd++) {
put_bits(&s->pb, 4, block->cpl_coord_exp [ch][bnd]);
int cpl_in_use; ///< coupling in use for this block (cplinu)
uint8_t channel_in_cpl[AC3_MAX_CHANNELS]; ///< channel in coupling (chincpl)
int num_cpl_channels; ///< number of channels in coupling
- uint8_t new_cpl_coords; ///< send new coupling coordinates (cplcoe)
+ uint8_t new_cpl_coords[AC3_MAX_CHANNELS]; ///< send new coupling coordinates (cplcoe)
uint8_t cpl_master_exp[AC3_MAX_CHANNELS]; ///< coupling coord master exponents (mstrcplco)
int new_snr_offsets; ///< send new SNR offsets
int new_cpl_leak; ///< send new coupling leak info
int ff_ac3_compute_bit_allocation(AC3EncodeContext *s);
+void ff_ac3_group_exponents(AC3EncodeContext *s);
+
void ff_ac3_quantize_mantissas(AC3EncodeContext *s);
void ff_ac3_output_frame(AC3EncodeContext *s, unsigned char *frame);
#include <stdint.h>
-#include "ac3enc.h"
-
/* prototypes for static functions in ac3enc_fixed.c and ac3enc_float.c */
bnd++;
}
+ /* calculate coupling coordinates for all blocks for all channels */
+ for (blk = 0; blk < s->num_blocks; blk++) {
+ AC3Block *block = &s->blocks[blk];
+ if (!block->cpl_in_use)
+ continue;
+ for (ch = 1; ch <= s->fbw_channels; ch++) {
+ if (!block->channel_in_cpl[ch])
+ continue;
+ for (bnd = 0; bnd < s->num_cpl_bands; bnd++) {
+ cpl_coords[blk][ch][bnd] = calc_cpl_coord(energy[blk][ch][bnd],
+ energy[blk][CPL_CH][bnd]);
+ }
+ }
+ }
+
/* determine which blocks to send new coupling coordinates for */
for (blk = 0; blk < s->num_blocks; blk++) {
AC3Block *block = &s->blocks[blk];
AC3Block *block0 = blk ? &s->blocks[blk-1] : NULL;
- int new_coords = 0;
- CoefSumType coord_diff[AC3_MAX_CHANNELS] = {0,};
- if (block->cpl_in_use) {
- /* calculate coupling coordinates for all blocks and calculate the
- average difference between coordinates in successive blocks */
- for (ch = 1; ch <= s->fbw_channels; ch++) {
- if (!block->channel_in_cpl[ch])
- continue;
-
- for (bnd = 0; bnd < s->num_cpl_bands; bnd++) {
- cpl_coords[blk][ch][bnd] = calc_cpl_coord(energy[blk][ch][bnd],
- energy[blk][CPL_CH][bnd]);
- if (blk > 0 && block0->cpl_in_use &&
- block0->channel_in_cpl[ch]) {
- coord_diff[ch] += fabs(cpl_coords[blk-1][ch][bnd] -
- cpl_coords[blk ][ch][bnd]);
- }
- }
- coord_diff[ch] /= s->num_cpl_bands;
- }
+ memset(block->new_cpl_coords, 0, sizeof(block->new_cpl_coords));
+ if (block->cpl_in_use) {
/* send new coordinates if this is the first block, if previous
* block did not use coupling but this block does, the channels
* using coupling has changed from the previous block, or the
* coordinate difference from the last block for any channel is
* greater than a threshold value. */
- if (blk == 0) {
- new_coords = 1;
- } else if (!block0->cpl_in_use) {
- new_coords = 1;
+ if (blk == 0 || !block0->cpl_in_use) {
+ for (ch = 1; ch <= s->fbw_channels; ch++)
+ block->new_cpl_coords[ch] = 1;
} else {
for (ch = 1; ch <= s->fbw_channels; ch++) {
- if (block->channel_in_cpl[ch] && !block0->channel_in_cpl[ch]) {
- new_coords = 1;
- break;
- }
- }
- if (!new_coords) {
- for (ch = 1; ch <= s->fbw_channels; ch++) {
- if (block->channel_in_cpl[ch] && coord_diff[ch] > 0.04) {
- new_coords = 1;
- break;
+ if (!block->channel_in_cpl[ch])
+ continue;
+ if (!block0->channel_in_cpl[ch]) {
+ block->new_cpl_coords[ch] = 1;
+ } else {
+ CoefSumType coord_diff = 0;
+ for (bnd = 0; bnd < s->num_cpl_bands; bnd++) {
+ coord_diff += fabs(cpl_coords[blk-1][ch][bnd] -
+ cpl_coords[blk ][ch][bnd]);
}
+ coord_diff /= s->num_cpl_bands;
+ if (coord_diff > 0.03)
+ block->new_cpl_coords[ch] = 1;
}
}
}
}
- block->new_cpl_coords = new_coords;
}
/* calculate final coupling coordinates, taking into account reusing of
for (bnd = 0; bnd < s->num_cpl_bands; bnd++) {
blk = 0;
while (blk < s->num_blocks) {
- int blk1;
- CoefSumType energy_cpl;
+ int av_uninit(blk1);
AC3Block *block = &s->blocks[blk];
if (!block->cpl_in_use) {
continue;
}
- energy_cpl = energy[blk][CPL_CH][bnd];
- blk1 = blk+1;
- while (!s->blocks[blk1].new_cpl_coords && blk1 < s->num_blocks) {
- if (s->blocks[blk1].cpl_in_use)
- energy_cpl += energy[blk1][CPL_CH][bnd];
- blk1++;
- }
-
for (ch = 1; ch <= s->fbw_channels; ch++) {
- CoefType energy_ch;
+ CoefSumType energy_ch, energy_cpl;
if (!block->channel_in_cpl[ch])
continue;
+ energy_cpl = energy[blk][CPL_CH][bnd];
energy_ch = energy[blk][ch][bnd];
blk1 = blk+1;
- while (!s->blocks[blk1].new_cpl_coords && blk1 < s->num_blocks) {
- if (s->blocks[blk1].cpl_in_use)
+ while (!s->blocks[blk1].new_cpl_coords[ch] && blk1 < s->num_blocks) {
+ if (s->blocks[blk1].cpl_in_use) {
+ energy_cpl += energy[blk1][CPL_CH][bnd];
energy_ch += energy[blk1][ch][bnd];
+ }
blk1++;
}
cpl_coords[blk][ch][bnd] = calc_cpl_coord(energy_ch, energy_cpl);
/* calculate exponents/mantissas for coupling coordinates */
for (blk = 0; blk < s->num_blocks; blk++) {
AC3Block *block = &s->blocks[blk];
- if (!block->cpl_in_use || !block->new_cpl_coords)
+ if (!block->cpl_in_use)
continue;
clip_coefficients(&s->dsp, cpl_coords[blk][1], s->fbw_channels * 16);
for (ch = 1; ch <= s->fbw_channels; ch++) {
int bnd, min_exp, max_exp, master_exp;
+ if (!block->new_cpl_coords[ch])
+ continue;
+
/* determine master exponent */
min_exp = max_exp = block->cpl_coord_exp[ch][0];
for (bnd = 1; bnd < s->num_cpl_bands; bnd++) {
return ret;
}
+ ff_ac3_group_exponents(s);
+
ff_ac3_quantize_mantissas(s);
ff_ac3_output_frame(s, frame);
*/
const char *avcodec_license(void);
+#if FF_API_AVCODEC_INIT
/**
- * Initialize libavcodec.
- * If called more than once, does nothing.
- *
- * @warning This function must be called before any other libavcodec
- * function.
- *
- * @warning This function is not thread-safe.
+ * @deprecated this function is called automatically from avcodec_register()
+ * and avcodec_register_all(), there is no need to call it manually
*/
+attribute_deprecated
void avcodec_init(void);
+#endif
/**
* Register the codec codec and initialize libavcodec.
*
- * @see avcodec_init(), avcodec_register_all()
+ * @warning either this function or avcodec_register_all() must be called
+ * before any other libavcodec functions.
+ *
+ * @see avcodec_register_all()
*/
void avcodec_register(AVCodec *codec);
for (ch = 1; ch <= s->fbw_channels; ch++) {
if (block->channel_in_cpl[ch]) {
if (first_cpl_coords[ch]) {
- block->new_cpl_coords = 2;
+ block->new_cpl_coords[ch] = 2;
first_cpl_coords[ch] = 0;
}
} else {
if(!s->current_picture_ptr) return 0;
if(!s->dropable) {
- ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
+ err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
h->prev_poc_msb = h->poc_msb;
h->prev_poc_lsb = h->poc_lsb;
}
h->prev_frame_num = h->frame_num;
h->outputed_poc = h->next_outputed_poc;
- return 0;
+ return err;
}
int ff_h264_frame_start(H264Context *h){
}
}
-static void field_end(H264Context *h, int in_setup){
+static int field_end(H264Context *h, int in_setup){
MpegEncContext * const s = &h->s;
AVCodecContext * const avctx= s->avctx;
+ int err = 0;
s->mb_y= 0;
if (!in_setup && !s->dropable)
if(in_setup || !(avctx->active_thread_type&FF_THREAD_FRAME)){
if(!s->dropable) {
- ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
+ err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
h->prev_poc_msb= h->poc_msb;
h->prev_poc_lsb= h->poc_lsb;
}
MPV_frame_end(s);
h->current_slice=0;
+
+ return err;
}
/**
ff_thread_report_progress((AVFrame*)s->current_picture_ptr, INT_MAX, 0);
ff_thread_report_progress((AVFrame*)s->current_picture_ptr, INT_MAX, 1);
ff_generate_sliding_window_mmcos(h);
- ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
+ if (ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index) < 0 &&
+ s->avctx->error_recognition >= FF_ER_EXPLODE)
+ return AVERROR_INVALIDDATA;
/* Error concealment: if a ref is missing, copy the previous ref in its place.
* FIXME: avoiding a memcpy would be nice, but ref handling makes many assumptions
* about there being no actual duplicates.
}
}
- if(h->nal_ref_idc)
- ff_h264_decode_ref_pic_marking(h0, &s->gb);
+ if(h->nal_ref_idc && ff_h264_decode_ref_pic_marking(h0, &s->gb) < 0 &&
+ s->avctx->error_recognition >= FF_ER_EXPLODE)
+ return AVERROR_INVALIDDATA;
if(FRAME_MBAFF){
ff_h264_fill_mbaff_ref_list(h);
* @param h h264 master context
* @param context_count number of contexts to execute
*/
-static void execute_decode_slices(H264Context *h, int context_count){
+static int execute_decode_slices(H264Context *h, int context_count){
MpegEncContext * const s = &h->s;
AVCodecContext * const avctx= s->avctx;
H264Context *hx;
int i;
- if (s->avctx->hwaccel)
- return;
- if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
- return;
+ if (s->avctx->hwaccel || s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
+ return 0;
if(context_count == 1) {
- decode_slice(avctx, &h);
+ return decode_slice(avctx, &h);
} else {
for(i = 1; i < context_count; i++) {
hx = h->thread_context[i];
for(i = 1; i < context_count; i++)
h->s.error_count += h->thread_context[i]->s.error_count;
}
+
+ return 0;
}
int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
MpegEncContext * const s = &h->s;
int i, av_uninit(j);
- int current_ref_assigned=0;
+ int current_ref_assigned=0, err=0;
Picture *av_uninit(pic);
if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
if(mmco[i].opcode != MMCO_SHORT2LONG || !h->long_ref[mmco[i].long_arg]
|| h->long_ref[mmco[i].long_arg]->frame_num != frame_num)
av_log(h->s.avctx, AV_LOG_ERROR, "mmco: unref short failure\n");
+ err = AVERROR_INVALIDDATA;
continue;
}
}
"assignment for second field "
"in complementary field pair "
"(first field is long term)\n");
+ err = AVERROR_INVALIDDATA;
} else {
pic= remove_short(h, s->current_picture_ptr->frame_num, 0);
if(pic){
av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n");
+ err = AVERROR_INVALIDDATA;
}
if(h->short_ref_count)
"number of reference frames (%d+%d) exceeds max (%d; probably "
"corrupt input), discarding one\n",
h->long_ref_count, h->short_ref_count, h->sps.ref_frame_count);
+ err = AVERROR_INVALIDDATA;
if (h->long_ref_count && !h->short_ref_count) {
for (i = 0; i < 16; ++i)
print_short_term(h);
print_long_term(h);
- return 0;
+ return err;
}
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb){
return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
}
+#if !FF_API_AVCODEC_INIT
+static
+#endif
void avcodec_init(void)
{
static int initialized = 0;
#ifndef FF_API_VERY_AGGRESSIVE
#define FF_API_VERY_AGGRESSIVE (LIBAVCODEC_VERSION_MAJOR < 54)
#endif
+#ifndef FF_API_AVCODEC_INIT
+#define FF_API_AVCODEC_INIT (LIBAVCODEC_VERSION_MAJOR < 54)
+#endif
#endif /* AVCODEC_VERSION_H */