int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src) { int i; MpegEncContext *s = dst->priv_data, *s1 = src->priv_data; if (dst == src) return 0; // FIXME can parameters change on I-frames? // in that case dst may need a reinit if (!s->context_initialized) { memcpy(s, s1, sizeof(MpegEncContext)); s->avctx = dst; s->bitstream_buffer = NULL; s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0; if (s1->context_initialized){ s->picture_range_start += MAX_PICTURE_COUNT; s->picture_range_end += MAX_PICTURE_COUNT; ff_MPV_common_init(s); } } if (s->height != s1->height || s->width != s1->width || s->context_reinit) { int err; s->context_reinit = 0; s->height = s1->height; s->width = s1->width; if ((err = ff_MPV_common_frame_size_change(s)) < 0) return err; } s->avctx->coded_height = s1->avctx->coded_height; s->avctx->coded_width = s1->avctx->coded_width; s->avctx->width = s1->avctx->width; s->avctx->height = s1->avctx->height; s->coded_picture_number = s1->coded_picture_number; s->picture_number = s1->picture_number; s->input_picture_number = s1->input_picture_number; memcpy(s->picture, s1->picture, s1->picture_count * sizeof(Picture)); memcpy(&s->last_picture, &s1->last_picture, (char *) &s1->last_picture_ptr - (char *) &s1->last_picture); // reset s->picture[].f.extended_data to s->picture[].f.data for (i = 0; i < s->picture_count; i++) s->picture[i].f.extended_data = s->picture[i].f.data; s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1); s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1); s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1); // Error/bug resilience s->next_p_frame_damaged = s1->next_p_frame_damaged; s->workaround_bugs = s1->workaround_bugs; s->padding_bug_score = s1->padding_bug_score; // MPEG4 timing info memcpy(&s->time_increment_bits, &s1->time_increment_bits, (char *) &s1->shape - (char *) &s1->time_increment_bits); // B-frame info s->max_b_frames = s1->max_b_frames; s->low_delay = s1->low_delay; s->dropable = s1->dropable; // DivX handling (doesn't work) s->divx_packed = s1->divx_packed; if (s1->bitstream_buffer) { if (s1->bitstream_buffer_size + FF_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size) av_fast_malloc(&s->bitstream_buffer, &s->allocated_bitstream_buffer_size, s1->allocated_bitstream_buffer_size); s->bitstream_buffer_size = s1->bitstream_buffer_size; memcpy(s->bitstream_buffer, s1->bitstream_buffer, s1->bitstream_buffer_size); memset(s->bitstream_buffer + s->bitstream_buffer_size, 0, FF_INPUT_BUFFER_PADDING_SIZE); } // MPEG2/interlacing info memcpy(&s->progressive_sequence, &s1->progressive_sequence, (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence); if (!s1->first_field) { s->last_pict_type = s1->pict_type; if (s1->current_picture_ptr) s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f.quality; if (s1->pict_type != AV_PICTURE_TYPE_B) { s->last_non_b_pict_type = s1->pict_type; } } return 0; }
int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src) { int i; MpegEncContext *s = dst->priv_data, *s1 = src->priv_data; if (dst == src) return 0;  